Do you use your needle, a seam ripper, or something else when you have to frog stitches? Why do you use the method that you do?
Late again for this question, but here is my answer:
Just the other day I had to frog a letter on my red & white sampler. I began using my needle, lifting the thread slowly and carefully, but then got stuck - I couldn't figure out where the next stitch came from, so I got out my fine little scissor and began snipping the stitches and picking out the cut threads. A bit like surgery it was, but I was very patient and careful not to cut the linen!
I prefer using the needle 'cause that is what I have in hand and find it's a safer tool. But if it's a tangled mess in the back and I can't track my line of stitching, I'll cut. I have seen interesting gadgets on internet that apparently snip and cut wrongly placed stitches,and pick out the bits, but would have to do some more looking into it to see if I would want to try any of those. Mind you, for now I'm only working with one color. My strategy would probably change if there were many colors in the piece!
Basically, I try to use the simplest tool or solution for that situation at that moment, and then work from there. Hey, whatever works, right?