i've been using luminocks and i love them. only prob is they are expensive. there is a site i ran across that has some neat projects i thought some of you might like. www.deerslayer.freewebspace.com. under the heading of homebrew projects he makes luminocks for vertical bows.....just wondered if anyone had some ideas on how to make them for crossbows? sorry long winded. check out the feeder....neat.