A couple years ago we introduced our then 7 month old TWIN boys to boating/ Lake Winni/Island Living etc. It was a bit rough at first.... (took them while to get used to their life jackets) However, I am happy to report that once they got used to their Jackets everything was great. The hum of the engine is a GREAT nap inducer.
Now when we are on the lake both boys can't WAIT for a boat ride. They jump up and down and say "boat ride, boat ride, boat ride, boat ride.... " until we cave and say "ok." They are now 2 1/2 years old and ready for their third boating season on Lake Winni.