Vapor Trail Limbdriver ?
 

Its made in specific versions each for Hoyt, Mathews, and Bowtech along with a "standard" version. Before contacting Vapor Trail I thought I might ask if the "standard" version will work well on a Mathews Q2XL or my '05 Bowtech Patriot? I may transfer my Schaffer to his Q2XL and put a Limbdriver on mine. He needs a better rest than the old TM Hunter his bow currently has, and thought about trying the Limbdriver on mine since I am putting out the money.

RE: Vapor Trail Limbdriver ?
 

I think the standard one will work. They need to put a set screw in the rest mount like on all other rests to keep it from rotating. The one I have dosen't quite fit my BowTech and I have it rotated down so the launcher pivot stem is lower to fit flush with the shelf. Otherwise, the launcher stem is about 1/4 inch above the shelf and it's giving up a little fletch clearance.