Next, I snipped off the pectoral fins and pressed them between cardboard to dry. Luckily, the instructions for the hand mold are written for a 6-year-old IQ, so I had no trouble figuring it out. Dunk the fish in the molding mix as far as it'll go, fill the mold with casting cement and voila, a fish head. All the molding gel peeled away cleanly or washed out with water, making the trout smoker-ready. It had absolutely no funny aftertaste.