hi i am currently building a 14 foot X-1 cab-over hydro and was wondering if you have to use a special motor or if the motor has to be a certain type. i am not going to race just want something to zip around in on our pond, well actualy its like a small lake. and i noticed that hydros have a small fin on the left sponson to aid in turning but since im not going to race and turn in both directions at good speed would i be able to just put a fin on each sponsoon or is that not possible? than you ne info would he helpful to get this newbie safely out on the water...sorry to mention the motor i was gonna use is the old 70 horse evinrude off my 1968 hydroswift out in the back, thank you