I made a framework of 1/2" PVC pipe with crutch tips on the legs to put over the TV antenna, its lite, cheap and no sharp edges. Also on the AC unit where the bolts come through the cover I used the plastic snap on caps that are used on house type toilet bolts. Remove the nuts, place the base washer on the bolt and replace the nut and then the plastic cap snaps over the base washer and protects the cover from wearing on those 4 bolt heads sticking up.