First of all, this article helped me a lot for clipping in:
http://outside.away.com/outside/body...-20070330.html
Get your butt on the saddle as soon as you start moving, and this will make you more stable while you clip in your second foot. If it takes a couple of tries to clip in, you can pedal with one foot a couple of times to keep forward momentum. You will be fine as long as you're sitting down and moving.
For clipping out, when I had spd pedals it was more comfortable for me to clip out with my foot at the top of the pedal stroke, turning my ankle in. This was because of scar tissue in my right ankle from surgery years ago. Last year I switched to Speedplay pedals which require you to turn your ankle out to clip out, and this had to be done at the bottom of the pedal stroke, because I couldn't get enough leverage at the top. So I had to relearn how to unclip. With the Speedplays, my ankle doesn't hurt when I do this.
I always put my right foot in clipping-out position (currently at bottom of stroke) any time I think I might have to stop. I always shift into an easy gear as I approach an intersection where it's possible that I'll have to stop, and then clip out so my foot is free before I get there. Shifting to an easy gear makes it easier to get going again, so you can easily build up enough momentum while you're clipping in with your second foot.
When I first got clipless pedals, the LBS guys put my bike on the trainer so I could practice clipping in and out. When I got the Speedplay pedals, the bike was on the trainer for a fitting, so I was again able to practice clipping in and out. Afterwards I practiced a few times in my living room, holding onto furniture for support.
Another way to practice is riding on an unpaved, flat area, like a grassy field, because it's softer if you fall.
I fell the first time I tried to ride with clipless pedals, because I thought I usually put my left foot down first and was totally wrong about that. I fell once at the start of a century ride because someone walked in front of me at the start area while I was moving very slowly. I fell once trying to get clipped in at an intersection (before I read that Chris Carmichael article) and I fell once while I was standing still because I leaned left for no apparent reason (I got a really cool swirly scrape on my right leg from the chain ring as a result).
All of that being said, as I said on the other thread, if you're that unhappy with them, take them off your bike. You can always decide later that you're more comfortable on the bike and would like to try them again.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles