Cranky - I posted this elsewhere, probably better here - the pedal separation in my car is such that I have to rotate my foot considerably during heel and toe'ing - have been known to knock the ignition switch to "off" with my knee.
Learning to heel and toe took a while, especially to keep smooth braking effort, but it sure is nice not to lock the rears when I downshift before a corner. To keep in practice I tend to use the technique all the ime, even on the roads. (plus I like the noise of a blipped throttle).
At open track here I always end up in a swarm of Lotus 7 clones - those little cars will always run rings around me in the corners. I always end up showing them what is what on the straights - and thus arriving at the next corner far too fast. Nothing worse than trying to turn in when you are hard on the brakes. Spinsville beckons.