Zed, that's a great hamstring stretch. Whilst I have no trouble getting to the floor - I spend a lot of time on my knees cos I can't bend, my hamstrings are rubbish and I haven't touched my toes in years. So I'm going to give that one a try. I've done it with two legs, in yoga, but that's easy compared to one leg.
Also interested to read your conversations about the rower. I had a go yesterday for the first time since my THR, rather cautiously, but it seemed not to be a problem. didn't push it, though, only did 5 minutes. I'll be braver next time.