I'm absolutely sold on Hold Fast. I had ridden metal clips and (both single and double) straps for years with no real problems aside from the minor discomfort, however, I never knew what kind of comfort and strength I could be having with the HFs. Yes, they are better fit with BMX pedals, but will work with others (I never thought of using a long bolt for the GR-9s... might have to try it on mine). I will say this though... if you ride in soft soled shoes, it is really hard to beat the pure comfort and power you get with BMX pedals. Fred? Absolutely on a track bike, but so what. I can climb hills with more power and bomb hills in security. I have never slipped out of the HFs in the 6 months of riding with them. I do want to try the Anorexic pedals with HFs, but at $90... I wanna know for SURE before I buy them.