bro, you can also check out the Bonzi website for the clutch system. but let me tell you, it wont be fun to ran this boat with a clutch system.
i have a few catamaran hull too, actually there was any problem to launch this boat by yrself, wat i did was, i installed 2pcs of kitchen cabinet door handle on the top of the hull(1pc near the engine area, another near the carb)