Hi
A couple of thoughts here on the questionnaire:
1. With regards to the activities you are missing "Motor Boating" or "Motor Cruising". Certainly a lot of the boaters will not describe their activity as "Speed Boating".
2. With regards to "How often". Boating activities are normally fairly seasonal, with large number of days during the summer, and little to no days in the winter. This profile is not captured in your responses.
3. The speed limit byelaw is for a 11kph limit which equates to
circa 6.83 mph, not 5 mph.