Truthfully, I still don't like the idea of putting batteries in the cuddy on the hull. That area takes the most pounding from a wave. It lifts up the highest and drops the furthest.... add something heavy on the inside of the hull in that area and you are asking for a cracked hull IMHO.
Remember that the hull is designed and braced to take an incoming soft (water) shock against it, not outgoing hard (solid) heavy weight shocks.
Physics tells us that a free falling object accelerates at 9.81 meters per second per second. (9.81m/s^2) So a 25 lb battery (11.33 KG) falling 2 feet (.6096m)
[Think of a 2 ft high chop] has the impact force of roughly 67.69 Joules or 49.93 Ft. Lbs. Put two batteries together and you have the equivalent of roughly 100 ft. lbs pounding on your hull in a 2 foot drop. More as the wave height height increases. And every wave causes that pounding.
The furthest I've gone forward is the area between the captains and the mates seats, and even then I tried to insulate the batteries from the hull itself with several inches of wood over foam that the batteries sit on. Just my two cents.
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.
If God didn't have a purpose for us we wouldn't be here, so
Live simply, Love generously, Care deeply, Speak kindly.
(Leave the rest to God)
Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.