Originally Posted by
Black wallnut
Please explain the bolded part. If you don't want to be locked in securely you'd be better with toe clips and platform pedals. Too much float if one has range of motion problems can also be bad.
The short answer is that I've tried SPDs, and the amount of torque I put down on everything means I didn't like the lack of float I felt--it was as though everything was twisting forcefully as I put down power, rather than flowing smoothly. But, as was pointed out above, that may be a matter of experimenting re-positioning and adjusting the SPDs.