All Bushwacker's and SailorChuld's work. I just recalled the post. I have not had to remove and replace a tank (yet). Get a hold of SailorChuld. He replaced his a few years back. Below is the thread I pulled the post from. Bushwacker had an intriguing idea of using duel tanks. If a forward tank is the primary, a forward cg shift can help offset a heavier motor.
http://www.classicseacraft.com/commu...t=seafari+tank