So how are you guys rigging these? What size? Do you fish them like a senko? I was thinking about buying a pack tonight to try them out.

I have some and used them, but no success.  I do like them a lot, all the water they move.  I use normal T-rig, and yes fish real similar to a senko.  

Try the 4.75" in Green Pumpkin on a shakey head. On the bottom of the worm, about 1" from the head, put a small patch of Chartreuse JJ's Magic (I use a Q-Tip). Credit to Mike Siebert for this idea! Best Bluegill imitator I've used. I also do this with the Hag's Tornado in the Baby Bass color.  Good luck!