Issue: The Shoe I Wanted Only Came in Whole Sizes. I Bought a 1/2 Size Too Big.
Solution: A simple solution is to first place a ball of foot cushion, then a 3/4 insert cushion on top. If they're still too loose, use either strap cushions or back of heel cushions upside down on the inner top of the shoe and at the back of the heel to prevent slipping. The more cushion you add, the tighter the shoe will fit.