Seems to be two different kinds. from front to back it seems the middle of the boat is about 1/2 higher then the bow and stern, i kinda think this is either A in the design of the boat, or B, from it sitting on the trailer for years.
as far as the back of it, ill have to measure, it seems to be a pretty substantial bit. it has no problem getting on plane, i can jump it up with 1/2 throttle and maintain plane at 3/8th throttle, maybe a little lower. its a very light boat. probably weighs 200-300 lbs. the make is a Johnsen spelled with a E and not a O.