I own a beautiful custom fretless that I've just begun to play in my band - trying out the music to see if what I normally played on my 6 could be played as well on the 4-string fretless. Last rehearsal I played a slap/pop solo, and another song uses a tapping technique. Even though the band really liked the sound, I'm concerned about injuring my fretboard (ebony). I use medium taper-core strings. What do you think about tapping/slapping/popping on a fretless? Should I be concerned about the wear? Thanks for any thoughts.