I don't know about you but I never hesitate to use stitch markers to demarcate repeats when I'm knitting lace shawls. Somehow though I'm often reluctant to use them in sock knitting. Partly because they are on such a small scale, part of me thinks that I should be able to manage without them. And also, for ages I didn't have any stitch markers that were really suitable. Anything too large or too dangly got tangled up and anything too heavy just felt cumbersome.
Now I have found the very small solid type of stitch markers I am a complete convert and now own an impressive selection. I like my sock stitch markers to be very narrow - about 3mm - is perfect and solid with nothing dangle or tangly to get in the way. These tiny fluorescent markers from The Little Grey Girl are ideal - especially as you can locate them when they ping off into the dark recesses of the sofa cushions.