Great leads you guys, thank you both. I know someone out there has had experience doing this, I just don't want to go down the wrong path. I've cast enough lead jigs this weekend to last me for two years of Rock Cod and Ling Cod fishing, I'm sick of painting jigs with a rattle can paint. I want to learn how to achieve a highly reflective finish and Vinyl or foil might just be the ticket.
I have had some pretty good luck with holographic glitter suspended in epoxy. I have also used clear paint with glitter in it and then coated with clear epoxy. I know it's not what you are asking for but thought I would share.
old thread but heres how they do it in case you didnt get help.
the film is sold in rolls on ebay now and through embossing suppliers. on ebay its sold under holographic nails.
for metal lures you use a glue that activates with heat. its sold through screen printing suppliers or you can experiment with other glues such as spray mounts ect.
you spray the lure roll on the tape put it in a heat press and let it bond
pull it out and rip off the plastic backing. your lure is now holo taped.
on a budget you can make a clamp or padded vise, glue up the jig, clamp it and let it sit until the glue sets
then rip off the plastic.
If it's just a reflective finish over rattlecan you want a few coats of gloss clear acrylic, or if they make it, clear engine enamel, would work well. It won't resist chipping from bites, etc. as well as the mylar wrap but it's not nearly as intensive or specialized in materials. You can get either, or both, from Home Depot.