We have the exact same feeder and wound up with the exact same issue. We put ours on railroad ties and t-posted the middle supports, problem solved. We never had a hog try to use it again. The deer used it every day. People will say the fawns cant reach it. They don't have too. They pick up the feed the mature deer knock out onto the ground.
Life is a Highway. Don't take the wrong road twice. Take your time and enjoy it. Teach, love and support your family.
Hoyt Spyder Turbo
Gold Tip Velocities
HHA single pin, Ultra Rest
100 gr. Grim Reapers