Update....
So I actually found something that worked, although I do not want to make any assumptions that it would work on every floor or situation, just as a caveat...
Plaid brand Dimensional Fabric Paint stayed on the floor through rehearsals, didn't come off with water, and then peeled off/came off with a green scrub pad and a little rubbing alcohol. It comes it about 20 colors, and wasn't that expensive.
Not as good as spike tape, but worked pretty well.
Thank you for all of the ideas!!!
SSM