average minutes at 23 amp draw is 225, according to the label. That would be about 4 amp hours right? And unfortunately, until I can afford to build/buy a mount for the stern, I would have to remove it because on my size boat, deck space is very limited and there are few places it wouldn't foul lines or otherwise be in the way. Make sense? Also, my load is an am/fm/cd, a vhf radio, depth/wind/speed sensors and display, and my running lights. So I'm thinking I'm over batteried anyway for my 2-3 10 hour sails per month. Is that a fair statement?
Sceadwian, you're a blessing to me. Thanks for helping!