I've been playing bass for a long time, but almost always fingerstyle. Lately, I've been getting into slapping and popping. I'm having a bit of pain on the side of my thumb where it hits the fretboard. Even when I play soft, my thumb still meets the fretboard pretty good. I've seen some pretty accomplished slap players wrapping their thumbs with tape. I guess my first question is: Does this affect the sound greatly? And Secondly: Are they using athletic tape or is there something else that is recommended?