Has any of your skaters used this brand of spinner? http://youtu.be/64SEult8g3E
Never heard of this brand. Usually these videos are of the seller's kids, where they've been trained for hours to use the spinner. Or, they put a high-level skater with spin trainer experience on the "new and improved" tool. Surprise! A skater doing triples who's been using a spin trainer for years and years can spin on the new tool almost right away. *sarcasm*
I saw a motor-operated turntable for skaters at the PSA trade show. That's a lot of control to put in someone else's hands, but I guess the harnesses are similar.