John Riggs wrote:
As an older practitioner, I have no intention of trying my rolls on concrete unless forced to do so. As a secondary point, I question whether anyone would have enough time to do a nice roll if they were tripped or had an incident where they went down quickly. .
I've become laterally separated from my motorcycle on a couple of times and performed an instinctive roll which saved me from any injury. I have also tripped over in the back yard in the dark (stepped in a hole and rolled my ankle) and performed a nice side break fall, again, instinctively..
If your ukemi isn't instinctive, it's not much use..