Carbon fiber is a conductive material. CompTips were designed to be non-conductive. Kind of defeats the purpose although I am in the group that thinks CompTips are silly.

Hobie 18's made before 1987 are especially heavy boats. We had a 1988 H18mag for a few years. The only way to solo-right one, if you are under 180lb, is to use shroud extenders. Great boat though.