Im interested in learning how different people handle fourths, which involve either an excessive stretch with your fretting hand, or going from one string to the next. How do you play fourths quickly? Do you lay your finger down on the next string while going up? Do you finger the string with fingertip to spare while going down and roll it onto the lower string? Do you use a different finger for the second note? I'm really wondering what is the best way to handle this. I'd appreciate any comments.