Hi,
I have 2 old Fridges under my pergola that I took the shleves out of and placed a Rail at the Top for Hanging hooks on and a Stainless oven tray to catch the blood. I've used them many times for Sheep, Fallow, Sambar and Goats. I normally get 1 Large Fallow Quartered up and hang it normally for 3 days, I only turn them on when I need to use them and find them easy to clean as well when your finished.
Some Fridges(without an internal freezer) allow you to keep the Top Shelf in so you can even use that to hang your hooks on, you can normally get a 2nd hand stand alone Fridge for around $50 or look out for one at Hard Rubbish Time in your area.