Right now I'm working on a build, and I want to have a booming, bassy sub-woofer pickup, like what Billy Sheehan has in his set-up, but it needs to be really shallow with a small footprint. It only needs to cover the 3 to 4 lowest strings of a 7 string span, and ideally would have the same footprint as a strat single coil cut in half. It also needs to be humcanceling. Any ideas? C.