Get your self a small hacksaw, the really thin blade on a small bow handle ($ 8 to 15) the hack saw works really well to cut the rubber. then then use some all purpose waterproof weld glue and make a even spred on the sole and the bootsand let it dry with out sticking it on. (water proof cement will work too. now apply your glue that came with the kit and apply it over the sole again and the boot let it dry for at least 2 to 3 days. make sure that all edges are glued. i used this method and it has worked for me. i use my wader 2 to 3x a week and it;s held on for almost 2 years now. good luck