The thing that bugs me about you and a few others is, you are always saying things here before I can say them. BOTOH it saves me a lot of time for reading. BTW I do my Fishing from a small pontoon boat with a 3 HP electric motor. 4 L/A batteries are good for about 4 hours @2 knots if I use ice in the beer cooler.
I have used electric trolling motors in place of gasoline powered ones for years. A single 55 lb. thrust trolling motor is a good auxilliary for a 23 ft. sailboat, and to prove a point I once towed four 20 ft. scow sailboats with such a motor at better than two knots.