whoever made the reference pic was probably making it as a boat, a jet boat in fact. it would most likely have an impeller which pulls water through the front openings in the hull and pushes it out the back. The advantages to this type of boat is that it pulls less inches of water and (usually) allows the boat to manuever better. Hehe, I kinda like boats...
Great model, Im going to make a new level just for it, find out some way to do the physics for a boat, ask you for the model and poof! I will have a sweet level
I think im tired right now cuz I can't stop typing..
Yay I stopped typing, but wait, im typing right now, !OH NO!