Fuel Tanks
I am in the process of rebuilding the rear cockpit on 360 Commander (it was rotting on one side and sinking onto fuel tanks); the fuel tanks were pulled last week; I am very fortunate to have a friend that works on tanks for a living and is going to test them and/or refabricate them to my choosing.
My boat has 2 tanks that are 200 gallons each; after studying the rear cockpit area I have contemplated having him make a single rectangular tank that would be fitted over the center line of the boat; it would essentially rest on two stingers and some horizonal wooden supports; my reason for taking this approach is that it will allow for easy access to the hardware for the shafts if ever needed (previously under the tanks) better access to the couplings for shaft packing; it will also permit the installation of two vertical supports for the rear of the salon floor; with this option I will see a loss in fuel capacity down to about 300 gal from 400gal.



Totally agree with @Jeremy Goldstein on this. The redundancy is priceless In a pinch. Because you could adjust as needed if one tank runs out.