I am a saltwater fisherman so I use swimbaits, or shad tails, all the time. The way we rig them is either with a colored jig head, on a spinerbait, an inline spinner, a weighted arky type jig head, or texas style. And as far as jig heads go, well theres dozens out there now lie round, football, hot-lips, standing, shad head, and a lot more. do-it website has the most i've been able to find.
and for molds, i dont know how you feel about making one, but a 1 part resin mold is very easy and since most swimbaits have a flat side, it makes it ideal.