You should read some of the work by Dr. Temple Grandin. She explains a lot about cattle behavior and building facilities. It does not have to be expensive to be safe and effective.
It seems like I read once that, depending on the fat cover, most tenderization occurs during the first 7 days of hanging and days after that, intensifies the flavor.
Here is an auction that goes live tomorrow located in East TN. They usually have some used squeeze chutes for sale. I can't say yet because viewing does not start until tomorrow.
Pro Team Auction