Originally Posted by
njkayaker
The above advice but also get your weight off the seat (if you are coasting).
With your weight off the seat, your legs will be able to quickly act as shock absorbers.
You'll be able to stop/slow-down better if you can move your butt behind your seat. Practice (get used to) doing this on a normal (flat ride).
Lifting my butt off the seat felt much more unstable to me. I felt like my shoes were "floating" on the clipless pedals and I felt like I had less control. I must be doing something wrong.