Smaller molds would really demand some concentration I assume. Like Gary has suggested though, clear with the fiol in it on the bottom 1/2 of the mold would maybe work. If it we me, I'd cut out a template and use it to cut the foils needed for a shoot session. I'd have some clear hot and ready the use. I'd dip the lower edge of a foil into the clear,then quickly set the dipped edge into the bottom cavity making sure the foil stands up into the center of the cavity. When all cavities are loaded this way, close the mold and shoot your cover color.
This would definitely be too much putzing for this guy. While the baits look great I reallt wonder whether all the work entailed is really worth it, especially in water that has more than just a little stain.