I've got one on a 12' jon boat and it has rudders, and will turn in it,s own length. I used a 5.5 hp briggs motor and a Bears& Hersics 36x14 prop. The main problems are the boat needs more width, at 32" bottom width isn,t very stable but is great in tight places. The second is noise, even at an idle a one cyl makes lots of noise. I've even piggybacked the muffler and can't lower the noise to a comfortable level. The third problem is condensation in the gas tank, must have a water seperator and use it often. The low pressure created by the propeller causes the plastic tank to sweat a great deal. I've thought about insulating the tank and see if that will help, or maybe remove it and run an auxuraly tank but would need a fuel pump. The sad news is that the man who made my small prop passed away some time back and his wife tried to take over the company, but the state of Oregon refused to allow that. ( some tax issue I think), but the prop I have has been great.