Nadya's Poultry http://www.nadyaspoultry.com/ sells shrink bags, zip ties, and evacuation tubes.
You just tuck the bird in the bag neck first (I tuck the wings behind the back to prevent tears), insert the hollow tube into the cavity, zip tie snugly around the tube, and plunge into hot water (just like scalding). The instructions say submerge but I've found it more effective to dip to just behind the end of the drumstick, pull from the water, pull the tube, snug up the zip tie, and dip the other end to shrink the excess wrap. They look much more professional, no freezer burn, and very durable. I also have a vacuum sealer but I've found the shrink bags to be much nicer to deal with.
I also use inexpensive poly bags (freezer thickness) that I sell fresh birds in so that the buyer can easily repack as cut up before freezing if desired.

That's exactly what I was looking for, thanks