It is a lot easier to stir with some shiny copper tubing. To make it shiny, you can sanitize in some star-san or other acidic sanitizer.
I typically just rack with a copper scrub pad (from the grocery store) attached to the end of the racking cane. That usually works for me. You need surface area not mass.
I typically just rack with a copper scrub pad (from the grocery store) attached to the end of the racking cane. That usually works for me. You need surface area not mass.