On the bismuth or tin, all you have to do is empty your current pot of lead and put in the tin or bismuth. If you are going to do a couple of jigs for samples, take an old tablespoon or a small ladle, put a small chunk of tin, and heat the spoon/ladle with a torch and pour it into a hot mold. You can heat the cavity of the mold with a torch to to warm it up as well. Tin has a low melting point about 425 degrees lower than lead. I don't know how strong it is though. Bismuth is very hard, as I have poured bismuth jigs for the guys in Massachusetts. On the jigs, the walleye jig has a 90 degree hook, so I don't know if that is an issue for you. The other two are 60 degree hooks. You can incorporate a weedguard slot like Jig Man mentioned it is not complicated.