Cut collar?

Big Pugh, I'll build one and send you a picture of it if you can get me the measurements on the quick track box portion of the unit. I've seen the quick tracks that look like garmins but I've never owned one. What I will do is, exactly what you said. I'll put gps loops on the inside of the collar and the outside of the collar. Then make a hole for the quick track to poke through the collar. You should be able to run a tracking collar on the outside and one on the inside and still maintain a 4" cut coller width.

Decker, my sizes for small-13-17", medium-17-20", Large 20-23". But if you want any bigger or smaller I can make them what ever size you want. I try to keep a 3 inch play either way, in case people want to run them on different dogs.

Thanks guys