Re: charging
The real question is whether its worth the trouble. If you are attempting to keep a trolling motor battery topped off for example, this is a lost cause as you would have to run wide open for hours to charge the battery. If its just to keep a small battery charged that supplies a radio, fish finder, and lights that's another matter. Regardless, if you draw the battery down you will not recharge it on a ten minute run back to the dock.
