So there was Rixen, OWC, TSR, and Kansas in existence a couple years ago. Now there are several new ones (and these are just the ones that are public) such as Cincinnati, DFW, Tampa, SANTEE, and Revolution.
You forgot COW-C and I just read about DFW...super cool! I really want to try out Tampa since the cable goes in the opposite direction and I naturally ride regular
Unfortunately J-Rod land is so expensive in California it would be more profitable to build a parking lot...and it seems like getting all the approval and waivers in CA is more difficult (from what I heard)
Cable riding is getting some serious consideration due to how many people can ride at a time and it builds a community vs. having a small group of friends in one boat taking turns. It's fun to watch your buddy riding 20 seconds in front of you and your other buy behind you... and others on the other side of the cable all throwing down. Sure there's no wake but the obstacles and constant moving is where it's at.
ya COW-C got suied and boat and rv world now own it. totally stoked! by next spring theres going to be a motorcross track, mabye a boat lake, new sliders and kickers and everything! TOTALLY STOKED!