Thanks i get bad hotfoot and was hopeful more than optomistic.
Despite a few anecdotal accounts, I'm not at all convinced that pedal platform affects hotfoot (at least, not mine!). The pressure is 99% through the cleat. So with SPDs, you can't change this appreciably.
(as it happens, I found that 'roadie' cleats don't help me either, so it's not really SPDs that are the problem! Again, other riders have observed differently, although I haven't seen anyone do the same controlled test as me.)