Hello, For primarily financial reasons, I have unfortunately not been able to have formal training, so I'm self-taught. When I began two and a half years ago, I made the conscious choice to disregard the 4 fingers / 3 fret rule in favor of finger-per-fret to improve my finger span. I already had a good enough fingerspan due to classical guitar training and electric guitar fiddling. Out of curiosity, I recently tried playing some of my earlier exercises using the suggested 4/3 technique and I was surprised to see that it felt much more natural to my fretting hand. Turns out that the shapes that I would play on the electric guitar (like walking through a major scale) are not similar to the shapes that I had to play for the bass. So I have been thinking whether I should be completely changing my entire playing to 4/3, re-learning my favorite tracks. I have partially done as such and of course it has been a thoroughly enriching experience for (re-)learning the fretboard. However, my prior formal training on the guitar and personal intuition would dictate that it would be a mistake to completely let go of finger-per-fret, given that it has the distinct advantage of a bigger fingerspan. For example of an advantage of finger-per-fret, the longer fingerspan allows one to avoid all open strings when playing up to the 5th fret. In addition, I have identified a slap riff or two where it is advantageous to shift between the fretting techniques. Without doubt, I will see many more. I was wondering whether I could have some opinions on this. I have to be very self-critical to improve when I'm self-taught, and I wouldn't want to go on learning more advanced stuff hindered by improper technique.