Looks like there's plenty good info on spikes up there.
Don & Randy, thanks for those tips!
. . . and it's probably time for mink oil and shoe lace replace/maintenance, too. At least a couple of my white laced need to be white again... they're fine and won't break... they would just look better new and white again.
Me, too, I also, don't want to go back to metals... I still remember the first time when a friend put his foot on my car bumper to tie his shoes- I freaked out! (not on my 3 year old Toyota Corolla! lol) Then he showed me they were cool plastic spikes... I couldn't wait to get them fast enough.