mtruelove... how have you approached deck squats? Have you been trying a scaled back version? Using more momentum? Or just having a go as demoed in the video?
I've been at these since F1 was released and I'm close to being able to do 1 properly. I started with forward rolls to squat and stand... then progressed to rolling back on to mats and am down to just under and inch of mats. It's a slow process for me but I make progress pretty much every session.
I spend a good 30mins doing mobility work before I start F1 and on SL/MN/SLS day I do H1 beforehand or just a few sets of HS/PE1>iM which seems to make a big difference for me. Maybe you could put a couple of sets of skiers in your warm up?
I also find that running cross country twice a week in zero drop minimal shoes helps. I have to keep a close check on volume doing this but I'm sure my mobility is improving and I'm getting some new nerve sensations in my lower leg which is a good indicator I think.
I hope there's something helpful there ![]()