thanks for the help i am going to be making a 20 inch long by 4inch wide main hull with sponsens just big enough to keep it prop down. with cf conecting rods and a propshaft that's ajustable up and down and. blades on the sponsens for steering i will be using an tekin r1 pro esc with lrp 3.0 turn bl motor i know they arnt ment to be in a boat but i have a speciale (spelling) water cooling kit from a pc. I am going to be building it out of cf i used to make custom cf rc car and truck bodies out of cf so if you guy's need more info then just let me know so. thanks agian for the help please keep it coming this will be my first custom boat so any tips or thoughts are welcome.