Both aart and I are from the mitten.
I got the heavy duty tarps that were 8x10, because that size made the most efficient cover for my run. One spot got a wear/rub not quite through from a metal roofing corner, but that was it.
I used zip ties to tie the tarps down, and that worked really well too. Another nice thing: Black side up in the cold months for absorbing the sun's heat, and silver side up in the hot months to help reflect it.
I got the heavy duty tarps that were 8x10, because that size made the most efficient cover for my run. One spot got a wear/rub not quite through from a metal roofing corner, but that was it.
I used zip ties to tie the tarps down, and that worked really well too. Another nice thing: Black side up in the cold months for absorbing the sun's heat, and silver side up in the hot months to help reflect it.