Putting a new fuel Tank in 23 ft

[wavelength]

This was an old post but you get the idea. My thought was to replace the plywood with some new fangled product but went back with original plywood.

"This week I replaced my tank from a 1975 23 C/C. The old tank was sitting on a piece of 1/2in plywood with roving on the up side. The original tank had three 1in. strips of rubber running long ways. My issue was the filler hose rusted and leaked when putting gas in. To replace the filler hose and vent hose I figured since I was in there I'd replace the tank. The old tank had one corner that was showing signs of leaking.

I used the original plywood and put the new tank in yesterday. The new tank is 96 gallons and was built by RDS in Perry Fl. at a cost of 450.00"