I predominantly ride outside, but when I do ride on the trainer (Tacx Flux S) I need to be able to ride 2+ hours sometimes. I was running into saddle soreness at about an hour, so I looked into a rocker board.
After a little research I opted for the Rockr Pod Lite, mostly because it was an experiment and at $100 or so I felt like that was similar to the time and money I would need to spend to build something.
I love it.
It’s kind of cheesy that it just Velcro straps to connect the trainer to it, and it has the plastic balls, but it works great.
I don’t use the balls, as I find that I want it to rock as easily as possible. Most of us have trained ourselves to stay steady on the saddle, so you have to learn to intentionally rock to get relief from a stationary position. The more active the rocker plate the less you have to exaggerate the rocking motion.
As it’s just the trainer and not also the front wheel up on the board you can just turn the bars a little and find a pretty balanced spot if the trainer is not perfectly centered. I’ve found that to be most practical rather than repeatedly sliding it around and/or using a counter weight.
For me it has been game changing. I used to hate riding the trainer and now I can easily put in 2 hours of Z2 while watching TV with no numbness or pain. I never would have gotten out of the saddle on a rigid trainer, but I will get up about as frequently as on the road now, maybe every half hour or 45 minutes.
Interesting comments - I may give this a try.
I originally had (actually still have) an old Kinetic Rock n Roll and that thing is awesome, but I grew tired of wearing down tires and now that I have an ability to use erg it’s hard to go back. I initially purchased what I think is the “full rocker pod†that has both front and back mounted, but in comparison to the rock n roll I hated it, and I also thought the balls messed things up. I never considered the rear only option, nor did I consider not using the balls at all, so for $100 that seems like a reasonable option.
Reach out if you have any questions.
I tried a wheel on dumb trainer briefly, but wearing out the tires, the noise, lack of resistance, and now definitely realizing the power of ERG it would be hard to go back.
I’ve never tried the boards with the whole bike and trainer on them, I can see how having it basically perfectly balanced would be essential. Good luck with it if you do try it!
BTW, just checked and the price has climbed to $199. Not sure if I got mine on sale, they changed the price, or I just forgot how much it was. Sorry for the misquote.