This past summer, I rode to the Arctic Ocean. I was warned by a friend not to ride clipped in on the Dempster Highway, as it is a gravel/dirt highway. So I brought platforms to change town Whitehorse. BAD idea. No power, extremely tiresome to use, slow going. I rode with them for exactly one day. In camp, I couldn't change them out fast enough. I have always used Shimano A530 SPD pedals, and I have D2 Mountain Biking shoes, which are totally awesome.