Just remember that any snow underneath your tarp is going to compress underneath the weight of the water and if you do get a substantial thaw during the season there is a chance (very slight) that this 'snow' might melt underneath and potentially stretch the tarp. I highly doubt that this would happen but that would be worst case scenario.
You should be fine with a light skiff of snow underneath the tarp.
Making Backyard Rinks from 1999-2015
Twitter: @kevmac_5 or @macisaac_odr
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