Here's the coolest fence:
http://www.johnmarian.com/blog/run-chicken-run/
Jem, metal would be easy to wipe, but on the other hand, you'll have to be super careful with knives. I wonder if a proper good old fashioned butchers block would be nicer to work on... you could just pour boiling water on it after you're done and before you start processing.
For bleeding the birds, I would just fasten a broom handle horizontally on something and tie the lasso string to that and let them drip somewhere where it's easy to clean. I wouldn't come near the butchering table before the bird has been plucked and thoroughly washed. That would help lessen the risk of contaminating the meat.