I hear people talk about defretting all the time and I was wondering if anybody has ever considered delining their lined fretless. It's a Mexican Jazz Bass and that was the best thing I could afford at the time and they only come lined. Now I'm realizing that I'll never stop looking at my fingers because of the lines. I feel like if I take them out, fill the gaps with something dark, and do a good sanding job, the bass will look cooler and it will teach me how to play in tune without looking at the fingerboard all the time. Anybody think this is a good/dumb idea?