OK, I don't think I have ever heard that Polytrack is suppose to keep horses from breaking down. If you have a sore, bad traveling horse, running it over foam rubber isn't going to make a difference. I heard Polytrack is a much more giving surface that dirt. I notice that you don't see the "jolt" in the horses' legs and shoulder (as you do on dirt surfaces) when they are running over it. I have seen horses get sore in behind, bow tendons etc. on dirt surfaces also. Really, sooner or later, if a horse doesn't get a break from training, they are eventually going to become sore, regardless of the surface. Perhaps with the Poly, the horses take a little longer to get sored up? I am still on the fence about this surface. Last winter, the only complaint I heard from Turfway was the kick back from the track. But supposedly that was taken care of. Maybe Keeneland still needs some tweeking? Another thing, if so many trainers are complaining about Poly, why was Turfway full of horses training this summer? I have a friend that's a jockey, and she said River Downs was a "ghost town" compared to the year before. I have heard trainers bitch about dirt surfaces forever. So what's the dif?