After about 30 years shooting off the shelf I went to an elevated rest last year. Never had such good arrow flight. I tried several - modified weather rest, para brush rest, T-300 stick on flipper, and for me the modified weather rest is tops (others were too noisy for my tastes). Search "elevated rest" and you'll find some pictures SteveO posted of his - I modify mine similar. I cut off all of the rest below the arm and cut off all of the arm under the "Bear" logo, I also cut off the ridge on the strike plate. I pull off the tape on the back, glue the rest directly on with a little contact cement - low, maybe 1/4 inch over the shelf - and cover the whole shelf, site window, and arm with moleskin like SteveO. Real quiet, nice setup, and the self stick moleskin does most of the work to hold on the weather rest. This is a dandy setup. The biggest difference for me was that my nock point is now like 1/8 inch high instead of 5/8 and the arrows impacted a bit high, took about 2 days to get used to.
Ryan