Thanks! That might just work! Right now a 3rd application of Crisco is doing the job. One of our feeders is mounted on a 2" piece of EMT, the other on 2" PVC. The 'coons seem to have a lot more trouble with the metal EMT, but can still do it when the Crisco gets low. The nice smooth galvanized duct in a much larger diameter should be just the ticket, grease or no. And would be VERY easy to connect a small solar fence charger to!
If anyone else is having 'coons in the feeder problems, be aware that 'coons are VERY skilled at picking just the right tree branch to climb out on over the top of ANY food source and then springing the branch down or just dropping onto whatever the source is. I have witnessed this behavior. A whole family of nice plump 'coons dropping one at a time onto the top of your truck camper top at 2am at the campsite trying to get to your delicious smelling ice chest inside makes a slightly scary sound while you're sound asleep inside your nearby tent. Especially when the family members start arguing and scuffling with each other about who gets to try prying on some opening of the truck first.
- Jay