I have 4 fretless basses and each one has a different slant to it. 1.) Unlined maple board jazz bass, no side dots. 2.) Unlined ebonal board P bass, side dots. 3.) Notched rosewood board PJ bass, side dots 4.) Ric 4001 dot neck without lines, lots of side dots (one for each fret). Easiest to play is the notched Hohner, because you can feel exactly where the fret should be, even though you have to look closely at the neck to see it. Next would be the side dot P, although there aren't lines, the side dots give a point of reference. The others have either too much information (the Ric) which is the epitome of confusion with a seemingly endless stream of dots, or not enough (the jazz) which is like playing a plain piece of wood. Their problems are actually the same because they don't fulfill the purpose they were designed for: marking the fingerboard. If you have a plain fingerboard, look for a curve in the grain pattern, a contrasting figuring or a birdseye. These can help. Lines are okay, but you may fall into the habit of playing in front of the lines like you would if they were frets and you'll always be flat. (Not to be confused with Bb.) Play right on top of the line. Then when you pick up your fretted bass, you'll sound terrible because you'll be playing it the same way. Hope this helps.