So I’ve been using mine for a few weeks now and I’m curious what others think. I’ve never ridden any other rocker, so don’t have a comparison. I expected it to rock more than it does. I’ve completely removed the balance balls and it still doesn’t rock much. For example, OOS I have learned to do left leg down, bike leaning right, and vice versa, but it’s not leaning as much as it would on a real hill climb. Is that normal?
How much pressure are the rest of you putting in the balls? I’ve considered that if I go to a really high pressure it would cause more rocking, but it also raises the rear VERY high up.
It’s a nice sturdy build, and was easy to setup. It’s unfinished, so look out for splinters.
I think the only caution I would give is that if you’re a sprinter, you might want the full length version. I’m trying out Xert, and when I try to go for max power OOS sprints, the whole unit moves. I ended up facing in a different direction. 
Any other opinions?