Bought a few packages of these hooks as they look like a great idea. Problem is, I tear the worm up putting them on the hook when I slide the worm over the keeper (Texas Style). Is there a trick to rigging this hook??

Try wetting the keeper and then go slow. I'd also say that it may be a bit too much for something like a trick worm or other slender bodied worm. I know I had the same issues when I first used the Mustad grip pin hooks with a Basstrix locomotion worm but wetting the keeper and going slow was the way to do it. 

Okay, thanks, I'll give it a try!