RE: WHICH CLUTCH SYSTEM???
That is the same system we used in my fiberglass boat build lesson plan I did with my students. The Isopad worked well and made things a little easier to setup. The students also liked the idea of the grease fitting on the cone for lubrication. Tony has created a nice, reliable system. I had STUDENTS research the equipment for their hull with little input for me. Few students were already avid r/c boaters, most of them not. They all liked the way the hardware appeared and thus decided to make our purchase from WHH.