Hi, just thought I would share that I tried out the Bellabooty belt. For me this definitely works better than a barbell; nevertheless, I will say I needed to hold the dumbbells in the horizontal position otherwise I could not extend down as far as I needed. I had 5 risers on each side of the step. I think if I increased it to six risers that might eliminate the issue. However, at the moment only have enough for 5 on each side.
I will definitely be doing hip thrusts more often -- even outside STS 2.
Just thought I would share.