I never use a pick. I pluck with my fingers. With both of my Fender basses and (it seems) every other bass I've picked up, there is a good spot to anchor your thumb on the bass. It might just be the end of a pickup, but it works as a thumb rest. I'm getting used to my "new" Warwick Thumb bolt-on 5-string. The left hand is much less trouble than I feared, but my right hand is uncomfortable dangling in mid-air. If I rest my thumb on the end of a pickup, I'm plucking quite close to the bridge, which produces a "fneerp" tone I don't really intend. Between that spot and the fingerboard is the plucking "sweet spot" for the tone and punch I want, but there's no anchor/pivot point for my thumb. I don't want to carve a slot or mount a thumb rest if I can avoid mutilating this beautiful bass. Am I the only one who finds this awkward? Am I the only one who needs some sort of protrusion as a thumb rest?