I am building a run about 7'x13' and am trying to cover it to keep raccoons and possums out (predators in my neighborhood). One side is a solid building wall, two are 3' concrete walls with chainlink above and the front side is hardware cloth. Entire run is 8' tall. The bottom is secure. I can't find affordable 7' wide HC and do not need a solid roof. It rarely rains and the run is shaded by an avocado tree. Will the predators climb up and get in the top if I use plastic deer fencing and not hardware cloth? Thank you in advance!