my first time was on my mountain bike. I practiced unclipping for hours in the parking lot of my apartments. I'd clip in, ride and then unclip as fast and as smooth as I could. I got so good at it I thought I had been doing it forever. the next day I went out to the trails and was riding for 15-20 minutes when I was going up this short but steep hill. front tire hit a root sticking out of the ground and it stopped me dead, but that's ok, I was a master at unclipping...in the parking lot. things work so much differently when you panic. haha. lucky for me I was next to a sap covered pine tree and I was able to grab that before I hit the ground. unfortunately the other 3 times I fell that day I didn't have any trees around me.