Use a chain, Terry. A swing chain is perfect and put a cone on the chain, just above the feeder. I used a small bucket for the cone, drilled a hole in the bottom of it and slid it down the chain. Squirrels are smart critters, they will chew
through a rope, so that the feeder will fall to the ground. They will climb a tree and slide down the chain, to get to the feeder, if there is not a cone there.
I had one get past all my obstacles, but it did not get by me. I saw it maneuver itself to the feeder and I went out there. Seeing me, frightened the squirrel, 'cause it knew, that it shouldn't be there. In a panic, it ran up the chain and right into the bucket, hitting it's head on the "top" of the bucket, in the process. Knocked a bit senseless, it fell to the ground, but quickly came to it's senses and ran off. LOL