You just are not making them heavy enough, plus, you have to anchor the legs. There are a number of members, who buy those $100 tripod feeders from Walmart, here. The legs are 3 pieces of lightweight junk, and no way to anchor the legs. The hogs fold the legs up and dump over the feeders. I build my own tripods, and the legs are 14ga 1 1/2" square tubing. The bottom of the legs, have feet on them that I drive a 3 foot stake through. I have a winch, that hoists the 55 gallon drum. I have not had any trouble.