It depends on how much, how long, and often you fish. I personally would lean towards 24v on that boat and say make sure you have good, large group 31 deep cycles for trolling and you’ll be fine. Even for tournament use in the wind. Now, if you’re a heavy and fast troller all day long... maybe 36v. But in most cases on that boat, I would say 24v is plenty and cost effective.
Bullet 20XRD Comp - Merc 300XS
Mallard Marine Trenton, Tx