I am about to rebox a few of my unused slalom fins into weedys. I have built a jig that allows me to hold the fin upright (as it would sit in the board) and pour epoxy/polyurethane into a split mold from the top. I've read many of the related posts on here and am considering r5 epoxy or polurethane. Can anyone suggest a polyurethane product that they have used or an alternate epoxy?