Sparky ...... sounds like a good idea, but that velcro might cause enough friction to wear out the carpet in that spot .... you might want to put a small piece of scrap carpet directly under the pedal ..... for playing in other places, you could just take a small piece of carpet with you to put under the pedal ..... I remember when I played with a combo, the drummer would carry a good sized piece of carpet to put the drums on so that the 'spikes' wouldn't dig into a wood floor......
t.