I've got a duathlon (run/bike/run) coming up. I thought that maybe I'd use my toe clips on the bike so that I could wear my running shoes for the whole thing and not have to change footwear at all. I tried this out on Sunday and wasn't too happy with it: I didn't feel well connected to the pedals and kept playing with the straps trying to get them better. From what I've read, the PowerGrips might improve on this. However, I was also having an issue with pressure points/hot spots. Could the PowerGrips help on this, too? Anyone got some they are no longer using and would like to sell?