I've been thinking about the "zero fret" concept on a fretted bass...and was wondering if anyone has tried the same principle on a fretless?? Instead of a nut, just have something that keeps the strings spaced properly, but have the strings touching the actual fingerboard instead of a nut. Has anyone ever tried this, and if so, how were the results?? Also any details as far as how this was approached would be great. Thanks.