Lol cheap duct tape works well for borders. It's inexpensive and lasts forever. Just wrap from tree to tree along every border and everyone who isn't retarded should know ifm you see duct tape, you've gone to far. Just my suggestion; I have seen it used on a private field and the ENTIRE border was covered. It was a 10 acre area and the guy said it cost him $80 give or take to border the whole play area. There were a couple grass area that he couldn't border along, but he simply put some tall wooden "stakes" every 5 feet along the borders and sprayed them with bring orange paint.
Guardians of Asgaard
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