Huh.....I've been using gel gorilla glue (that states impact resistant) for inserts and vanes for years now, and I've never had a van fall off or an insert come out (unless it went through the target and into a tree). I have 5 year old arrows still kicking (gluing clean blazers onto a clean vinyl wrap). Just interesting your results have been very different. I shoot a good bit but rotate through a dozen (bring a random 3 out each time). It also might have to do with targets (how violently they stop arrow?). I shoot field points into a huge, home made bag target stuffed with a few thousand wal mart bags, and my broadhead target is a rinehart 18-1 (very little 3D, unfortunately).