I found these Steve Madden Trixx flats at Ross today for only $8.99! I tried them on and they seemed super comfy, except I couldn't really walk in them because they were attached with an elastic thingy... When I got home I realized they're pretty much impossible to walk in! They have elastic goring on both sides of the heel, plus they're tad big so there's a gap at the heel. Every time I take a step, my heel comes completely out of the shoe Can you think of any suggestions for making these shoes work?