I run on an indoor asphalt track where sorex 36's are the hot ticket. I use the much more warmers.
I put on sauce, and wrap part of a paper towel around the tire, so the 'cans' stay on a bit tighter, then just 5 min before the race, I turn them up to about 50 on the dial. once they turn off automatically, I just turn them off, but keep the cans on there. Put on the track, and it is stuck as heck!!