diff --git a/rowers/forms.py b/rowers/forms.py
index 4e199518..e64014aa 100644
--- a/rowers/forms.py
+++ b/rowers/forms.py
@@ -275,10 +275,24 @@ class IntervalUpdateForm(forms.Form):
 	    self.fields['type_%s' % i].widget.attrs['style'] = 'width:156px; height: 22px;'
 	    self.fields['intervald_%s' % i].widget = forms.TimeInput(format='%H:%M:%S.%f')
 
+boattypes = (
+    ('1x', '1x (single)'),
+    ('2x', '2x (double)'),
+    ('2-', '2- (pair)'),
+    ('4x', '4x (quad)'),
+    ('4-', '4- (four)'),
+    ('8+', '8+ (eight)'),
+)
+
+            
 # This form sets options for the summary stats page
 class StatsOptionsForm(forms.Form):
     includereststrokes = forms.BooleanField(initial=False,label='Include Rest Strokes',required=False)
     water = forms.BooleanField(initial=False,required=False)
+    waterboattype = forms.MultipleChoiceField(choices=boattypes,
+                                              label='Water Boat Type',
+                                              widget=forms.CheckboxSelectMultiple(),
+                                              initial = ['1x','2x','2-','4x','4-','8+'])
     rower = forms.BooleanField(initial=True,required=False)
     dynamic = forms.BooleanField(initial=True,required=False)
     slides = forms.BooleanField(initial=True,required=False)
diff --git a/rowers/templates/cum_flex.html b/rowers/templates/cum_flex.html
index 4d712ba2..942e5992 100644
--- a/rowers/templates/cum_flex.html
+++ b/rowers/templates/cum_flex.html
@@ -9,6 +9,55 @@
 {{ js_res | safe }}
 {{ css_res| safe }}
 
+<script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
+<script>
+  $(function() {
+  
+  // Get the form fields and hidden div
+  var checkbox = $("#id_water");
+  var hidden = $("#id_waterboattype");
+
+  
+  // Hide the fields.
+  // Use JS to do this in case the user doesn't have JS 
+  // enabled.
+
+  hidden.hide();
+
+
+  
+  // Setup an event listener for when the state of the 
+  // checkbox changes.
+  checkbox.change(function() {
+    // Check to see if the checkbox is checked.
+    // If it is, show the fields and populate the input.
+    // If not, hide the fields.
+    if (checkbox.is(':checked')) {
+  // Show the hidden fields.
+  hidden.show();
+  } else {
+  // Make sure that the hidden fields are indeed
+  // hidden.
+  hidden.hide();
+      
+      // You may also want to clear the value of the 
+      // hidden fields here. Just in case somebody 
+      // shows the fields, enters data to them and then 
+      // unticks the checkbox.
+      //
+      // This would do the job:
+      //
+      // $("#hidden_field").val("");
+    }
+  });
+
+
+  });
+
+
+
+</script>
+
 <script type="text/javascript" src="/static/js/bokeh-0.12.3.min.js"></script>
 <script type="text/javascript" src="/static/js/bokeh-widgets-0.12.3.min.js"></script>
 <script async="true" type="text/javascript">
diff --git a/rowers/templates/cumstats.html b/rowers/templates/cumstats.html
index 84d41d5c..269da30c 100644
--- a/rowers/templates/cumstats.html
+++ b/rowers/templates/cumstats.html
@@ -6,14 +6,58 @@
 
 {% block content %}
 
-	<script type="text/javascript" src="/static/js/bokeh-0.12.3.min.js"></script>
-	<script async="true" type="text/javascript">
-    Bokeh.set_log_level("info");
-	</script>
+<script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
+<script>
+  $(function() {
+  
+  // Get the form fields and hidden div
+  var checkbox = $("#id_water");
+  var hidden = $("#id_waterboattype");
 
-	{{ plotscript |safe }}
+  
+  // Hide the fields.
+  // Use JS to do this in case the user doesn't have JS 
+  // enabled.
 
-    <script>
+  hidden.hide();
+
+  
+  // Setup an event listener for when the state of the 
+  // checkbox changes.
+  checkbox.change(function() {
+    // Check to see if the checkbox is checked.
+    // If it is, show the fields and populate the input.
+    // If not, hide the fields.
+    if (checkbox.is(':checked')) {
+  // Show the hidden fields.
+  hidden.show();
+  } else {
+  // Make sure that the hidden fields are indeed
+  // hidden.
+  hidden.hide();
+      
+      // You may also want to clear the value of the 
+      // hidden fields here. Just in case somebody 
+      // shows the fields, enters data to them and then 
+      // unticks the checkbox.
+      //
+      // This would do the job:
+      //
+      // $("#hidden_field").val("");
+    }
+  });
+});
+</script>
+
+<script type="text/javascript" src="/static/js/bokeh-0.12.3.min.js"></script>
+
+<script async="true" type="text/javascript">
+  Bokeh.set_log_level("info");
+</script>
+
+{{ plotscript |safe }}
+
+<script>
     // Set things up to resize the plot on a window resize. You can play with
     // the arguments of resize_width_height() to change the plot's behavior.
     var plot_resize_setup = function () {
diff --git a/rowers/views.py b/rowers/views.py
index fc671f05..8dc37968 100644
--- a/rowers/views.py
+++ b/rowers/views.py
@@ -2097,7 +2097,8 @@ def cum_flex(request,theuser=0,
 	     enddatestring="",
              options={
                  'includereststrokes':False,
-                 'workouttypes':['rower','dynamic','slides']
+                 'workouttypes':['rower','dynamic','slides'],
+                 'waterboattype':['1x','2x','2-','4x','4-','8+']
              }):
 
     if 'options' in request.session:
@@ -2108,6 +2109,7 @@ def cum_flex(request,theuser=0,
     workstrokesonly = not includereststrokes
     checktypes = ['water','rower','dynamic','slides','skierg',
                   'paddle','snow','coastal','other']
+    waterboattype = ['1x','2x','2-','4x','4-','8+']
     
     if deltadays>0:
 	startdate = enddate-datetime.timedelta(days=int(deltadays))
@@ -2174,6 +2176,7 @@ def cum_flex(request,theuser=0,
         if optionsform.is_valid():
             includereststrokes = optionsform.cleaned_data['includereststrokes']
             workstrokesonly = not includereststrokes
+            waterboattype = optionsform.cleaned_data['waterboattype']
             workouttypes = []
             for type in checktypes:
                 if optionsform.cleaned_data[type]:
@@ -2182,6 +2185,7 @@ def cum_flex(request,theuser=0,
             options = {
                 'includereststrokes':includereststrokes,
                 'workouttypes':workouttypes,
+                'waterboattype':waterboattype,
                 }
             form = DateRangeForm(initial={
 	    'startdate': startdate,
@@ -2205,6 +2209,7 @@ def cum_flex(request,theuser=0,
 	r2 = getrower(theuser)
 	allworkouts = Workout.objects.filter(user=r2,
 					     workouttype__in=workouttypes,
+                                             boattype__in=waterboattype,
 					     startdatetime__gte=startdate,
 					     startdatetime__lte=enddate)
 	
@@ -2242,6 +2247,8 @@ def cum_flex(request,theuser=0,
     initial = {}
     initial['includereststrokes'] = includereststrokes
 
+    initial['waterboattype'] = waterboattype
+
     for wtype in checktypes:
         if wtype in workouttypes:
             initial[wtype] = True
@@ -4934,7 +4941,8 @@ def cumstats(request,theuser=0,
              plotfield='spm',
              options={
                  'includereststrokes':False,
-                 'workouttypes':['rower','dynamic','slides']
+                 'workouttypes':['rower','dynamic','slides'],
+                 'waterboattype':['1x','2x','2-','4x','4-','8+']
              }):
 
     if 'options' in request.session:
@@ -4945,6 +4953,7 @@ def cumstats(request,theuser=0,
     workstrokesonly = not includereststrokes
     checktypes = ['water','rower','dynamic','slides','skierg',
                   'paddle','snow','other','coastal']
+    waterboattype = ['1x','2x','2-','4x','4-','8+']
     
     if deltadays>0:
 	startdate = enddate-datetime.timedelta(days=int(deltadays))
@@ -5011,6 +5020,7 @@ def cumstats(request,theuser=0,
             includereststrokes = optionsform.cleaned_data['includereststrokes']
             workstrokesonly = not includereststrokes
             workouttypes = []
+            waterboattype = optionsform.cleaned_data['waterboattype']
             for type in checktypes:
                 if optionsform.cleaned_data[type]:
                     workouttypes.append(type)
@@ -5018,6 +5028,7 @@ def cumstats(request,theuser=0,
             options = {
                 'includereststrokes':includereststrokes,
                 'workouttypes':workouttypes,
+                'waterboattype':waterboattype,
                 }
             form = DateRangeForm()
             deltaform = DeltaDaysForm()
@@ -5036,6 +5047,7 @@ def cumstats(request,theuser=0,
 	r2 = getrower(theuser)
 	allergworkouts = Workout.objects.filter(user=r2,
 						workouttype__in=workouttypes,
+                                                boattype__in=waterboattype,
 						startdatetime__gte=startdate,
 						startdatetime__lte=enddate)
 	
@@ -5137,6 +5149,7 @@ def cumstats(request,theuser=0,
     # set options form correctly
     initial = {}
     initial['includereststrokes'] = includereststrokes
+    initial['waterboattype'] = waterboattype
 
     for wtype in checktypes:
         if wtype in workouttypes: