I built an Ultimate wheel 1.5 years ago, tried it a couple of times unsuccesfully and put it away to collect dust. Took it out today, cleaned it, pumped up the tyre and went out to practice. After 5mins I rode 5m and 10mins later Iwas riding 10m. I'm one happy vegemite
The ultimate wheel has the steepest learning curve. You go from thinking it is impossible and that you'll never get it to riding a few turns in no time at all. Don't tell everyone, though, as it is my only trick 😉