Cray - All that weight in the rear is my concern also. I could move all three trolling motor batteries to the midship area. With the rear most battery in front of the driver\pass seats.
As for how - I was thinking a piece of plywood, from stringer to stringer, to put the batteries on. Then, once i get to the floor, put in an Access hatch to check water level and such. Similar to what a ranger 621fs has, just further forward than theirs is.
Thoughts?
Attachment 360871
The white line, inside the red circle, is the front of the seating area. This is the picture i tried (unsuccessfully) to load in post #3.