If you mean the TRS Slider I just gave in and ordered it earlier this week.Every off season I ponder thiscraparea. Last year it was the nerf type thingy you place between your arms when you swing and this year it is that Robert Rock device. The ads for it are well done and looks like it will help but in the end do they ever?
Tried the Hackmotion (Black Friday sale) and struggled with initial setup and then never really felt I was getting consistent feedback/advice - so I sold it on at about the same price I paid, or maybe a small profit to cover shipping, as the deal had expired.
This looks far more simplistic in approach, and I would imagine pretty easy to set up correctly. Once it arrives and I can get the time I'll get it down to the range and give it a try out and come back with my feedback.










