I have posted this many times, simple plate. No bearings, no sliders, no springs, no moving parts, no clamps, can be built in an hour for less than $10 or from scrap. This is for the Kickr, and I built a bigger one for my Kickr bike as well. 40,000 km on Zwift and other apps without problems. I would never spend hundreds on something that has the same function.
