After learning so much in the begings of this project, (thanks much to this site) I might be going with a big engine. I would really like 5 seats and while they are light I really like the run dry and running the hill options. Like I say, I'm learning! We will still be building our own drive. I have a machine shop owner that is into the project. The 100 HP engine I have is just a Toyota 2SE 2.0L single cam. Nothing special but also slant block (hull ballance issues). I think these small engines are areally good option for small boats especially with a reduction unit. A lot of these engines were built to run at 4500 RPM all day so if you have just about 200 foot lbs. of torque from 1500-3000 rpm at the prop it would be pretty cool. For pics. im interested in auto instalations. Rudders and linkage, (im thinking tube with AC style of hiem joints). I would like perfered ratio of mechanical advantage for rudder, How much rudder leading edge in front of pivot, length of arms. Size of stringers engine mounted to. Any long drive pics, havent seen any up close yet. Ideas for easy aplication of polymers on the bottom and incorporate in the build process. Not asking much! Thanks loads!