Yeah, those falls can be embarassing and painful. After the initial falls (one in plain view of one my middle school students!), I was fine until last summer. We stopped to look at a rattlesnake, then had to ride up a steep hill. I didn't get in the right gear and realized near the crest that I wasn't going to make it. I just fell over because I couldn't unclip. Fortunately, there was just dirt and bushes on the side of the road- no cactus!