Welcome to the site. I would love to hear more about the ugly experiment. Some of the best lessons in life are learned from making mistakes and this holds true in the backyard rink life as well.
Making Backyard Rinks from 1999-2015
Twitter: @kevmac_5 or @macisaac_odr
Please visit your "User Control Panel" and update your location, rink dimensions, and materials used. It helps us when giving advice.