No wax on the boat bottom! On snow skis that may be fine on hard snow and if you have a wooden bottom that may be fine as well for running dry ground or anything other than pure water. Have been in all facets of boat racing for over forty years with the latest being drag racing. The best finish you can have on a fiberglass bottom is a 400-600 grit fiinish! Thats right....sand it! What happens is that this will build up a micro boundary layer of water with the turbulence. One of the guys above me was right on with his comments. The fastest thing against water...is water! Sharpen all the edges as well.