I sat back and watched the guys running the jammin since this summer, no great drivers running, but I could see the potential. with mainly sportsman running them where i saw them, I got to see just how durable they are, I was quite impressed with some of the beatings that they went through and kept on going. After having finally driven one for myself, I am very impressed, if I had the means to do it, I would buy one to try for this season