RE: which launcher for the QAD ultra rest
Blazers will hit the top bar with either launcher. I didn't think that they hit but I lost 15 fps with blazers, sure enough they hit. Just place an arrow on the restbackwards with the vane directly under the crossbar, hold the rest in the full upright position and line the shaft up with the nock. With Blazers being so common you would think that they would build in another 1/8" of clearance.