In reply to yoshi.h:
Interesting thread, I am currently resting under my board, preparing for another go at a circuit I cannot do.
I built my wall 10 ish years ago, used it initially, got into dry tooling and used it a lot for that. It was a 1hr drive to a decent wall. KK opened locally and I stopped using my wall. I was thinking of removing it when covid struck, very glad I didn't.
I use the wall 4x a week and feel stronger for it but I have no benchmark. I am not climbing outside for a number of reasons. I have certainly fallen back in love with my board and when normality finally returns I think I will continue to use it particularly if time pressed or too grumpy to socialise.
Whether the perceived gains are due to the board vs KK or due to an increase in available training time/head space due to working from home, I cannot say.