Can you do them with upright arms and flat spine with the bar overhead or does it fly forward to to your toes? It's a good test for mobility. If you can do it reasonably well it means you've got decent mobility. I do them for warming up to squatting. To start with, I have terrible OHS form, but as I work on my mobility it gets better and when I can do a comfortable OHS i'll go on to my FS workout.
edit, so this is my pre-workout mobility sequence
- loosen up my upper and middle back and shoulders with a band stretch. not sure what it's called but draw out the band in front of you with palms out and then take it behind and touch your lower back and repeat it. Usually do about 2 sets of 8 or until I feel freed up
- take a pvc pipe to my traps and behind my neck, that takes seconds, but it's important because it frees up your neck to have a comfortable rack position without choking yourself etc
- roll on a softball against a wall traps, lats that upper mid back area. This is quick too, about 20-30 seconds and done
- work down the back but also take a very painful detour around the obliques (i think) -- rollling here is very painful but if you do it right (arms up in the air), it will do wonders for t-spine mobility
- new one for me is painful but awesome -- rolling on my glutes -- need this to have a decent upright position at the bottom of a squat so it's v. important
- usual kstar bullshit stretches everyone does, so called couch stretch which is a bit useless imho but i do it anyway because everyone raves about it
- roll hips against wall .. i think pirformis? hurts like hell but it's cool
- free up quads, softball roll against wall .. magic for knees
- very important, ankles and calves, have to use pvc pipe for lower leg
- finally weighted ankle stretch, this feels so wrong but i kinda do it anyway, get into a squat position with the empty barbell across your quads near the knee, push down to stretch ankle on each side Then work up to using weight. i usually finish with 60kg on this, no shoes because that seems to help with the stretch
and im sure i'm forgetting some but if i go thru all that, will have decent mobility to do an easy comfortable correct OHS which then tells me i'm ready for FS.