1976 Mako 20CC: Coming to the conclusion that the lonely 3 stringers in this boat may be actual design. The tank is 44gal 25" wide, coffin is 32" at it's outer most edge. Lateral stringers measure 40" from each other. Anyone have a take on this? Also, assuming that the tank coffin itself acts as a partition but not true bulkhead. No bulkheads in this boat anywhere...Anyone? Input, thoughts, experience with this boat?