Battery configurations... will this work?

[branhamautomotive]

That small if alt. More than likely won't be enough to charge all 3 batteries. You don't want your charging system running at max all the tine. I would think you would want at least a 100 amp alt to do what your planning.

I don't know if that wiring would work that way, I think if you left the trolling motors in series to get 24v, then pulled that switch the charge by the 12V system, the 24v volts would back feed through the same wire, would you not need a break switch going in the series line between the 2 batteries used for the 24v motor?