Hey JP....That is an "impressive" one, but can you imagine trying to learn fretless playing on THAT fretboard.................

".......uh, lessee, that was the 10th white, down 2.......no, wait, I'm on the 11th.........lemmee count that again.......so I just slide up a bit and.....yeah almost......oops, that'd be the little black one with the nick between the 11th and 12th whites and down not quite 2........AAAARARGGGHHH.....MY EYES!!!!!!"

Fortunately fretless is best learned by feel.

Spaw