I powder coat my jig heads one at a time. Get the paint fluffy with the air flow, heat the jig head with a heat gun, grab the jig head by the hook eye with a pair of needle nose pliers, and shake the jig head thru the paint. Takes all of a few seconds. I have a rack that I hang them on and bake them in the oven for 10-15 minutes at 350. Doing that makes the paint really set up and get hard. Also holding the jig head by the hook eye doesn't allow the paint to cover the eye and you don't have to knock the paint out of the eye.