Confirm right angles with the classic 3-4-5 triangle or a tape-measured diagonal cross-check. Strong corners carry loads and keep the liner from wandering. When the geometry works, boards stay quiet, braces do less work, and flooding feels surprisingly calm, predictable, and even satisfying.
Sweep the grass thoroughly, remove stones, snip protruding roots, and cap sharp hardware. Lay foam pipe insulation on top edges to shield the liner from skate blades and sticks. A few dollars of protection save hours of patching and preserve clarity once the ice sets.
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