Ooh that sucks!
I thought I was going to do some falling yesterday, too. Went out for a nice two-hour ride to scout part of the 400k route from my house, and got onto a road I hadn't ridden before. It was _so_ absoloutely perfect- 80 degrees, gorgeous blue sky, fields still dormant and brown, tons of curious cows and calves, NO traffic. Got to my turn-around, and thought I'd short cut back a different way, but after 100 yards on the new road the traffic was so horrible, and no bike lane, that I stopped to turn back, and saw two riders behind me. So talked to them for 20 minutes, and then was _really_ late, went back the way I came, thought I'd short cut through a limerock road, because there's one by my house I do that with, and it works out ok even with skinny road tires because the limerock is so smooth, like concrete. Well, this one wasn't, and I should have turned back, but, oh no, can never do that. I ended up in deep sand, and was trying to ride through it, but road tires don't have _any_ traction, and my bike was sliding all over the place. Luckily, I had MTB shoes, so could keep one unclipped just in case, but I really thought I was going down a number of times.
Maybe that pedal system just doesn't agree with you. It shouldn't be so hard! Is it because you can't get unclipped, because you're stuck, or do you just wait too long and lose momentum and then just tip over? When I come up to a stop light, I unclip _way_ before, and rest my foot on the pedal, not clipped in, or if it's apparent I am going to have to stop, kind of dangle my leg down to be ready. I just think MTB shoes are so much easier for riding in traffic, because you don't have to be clipped in to stick to the pedal.
Well, don't give up, because once you get the hang of clipless, there's just no comparison in comfort.
Nanci
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"...I'm like the cycling version of the guy in Flowers for Algernon." Mike Magnuson