I don't know how to either, but I've seen them and I think they're neat looking. I wasn't suggesting that you perform a core shot, but that if you put one of those rubber strands in the tail (not perpendicular, but through the tail and sticking out a little), when you poured the plastic around it it might look like a core shot (i.e. have a core shot effect). If you look at the picture below, you can see that this bait has an inner color, with another color around it - this is a core shot. Just a thought, didn't mean to get open a can of worms... :D
