Originally Posted by
Chops
Speaking of keeping things "under powered", one of those fold up boats could be handy. If you were to power it, or even a small car topper, with one of those Water Snake electric motors, you could use your duel battery setup to charge a third battery for the boat. They're not fast, but good enough to get you about for a troll in quiet waterways and rivers that aren't too fast flowing.
Another option for you could be an inflatable boat. Cant remember what they call them (generic name eludes me), but they can be small, light, you have on board air to blow them up.