I cut out a slot on the barrel A little bigger this year to invert to hold the barrel tight against the tree. Then put 1 1/4" 90 degree emt through the top and bottom. I will put a chain through the emt then use some all thread to tighten it up and put a lag or two into the tree for tightness. I also drilled some 1/2" holes and welded some 1/2" emt through the barrel to keep the browns from crushing it. I did this last year and it worked out great. Just want to make a few changes and hole size a little bigger about 5 ". Just welded a pipe into the hole to try to protect the arm hair and put a nice rounded edge. Any one got some advice or new ideas.