Powder paint all the way for jigs. You can buy a cheap heat gun, a $20 toaster oven, and a rack. Those three things are all the equipment you need to get started. The main thing though, is durability. You really just can't do better than heat cured powder paint for a jig. You have to remember, a crank goes to a specific segment of the water column, while a jig drags along the bottom, bouncing off of rocks and any other detritus that may be on the bottom.