I have seen some homesteader YouTubes that use a "rack" to drain the birds during/after rinsing. I think I've seen as many as 12 & as few as 2. Made from PVC. A chicken carcass can be put over the upright either "head" or "bottom" up & can be given a final rinse while "racked".
I imagine that this can speed up the draining process before bagging, but I don't know. I have always done only a few birds at a time & do the final rinse & drain in kitchen sinks. I bag in zip lock freezer bags after parting out (to more easily utilize small amount of freezer space). I haven't noticed pooling water, but have noticed scent in fridge during cooling/resting process before freezing.
& i just realized something else. I have not yet plucked a chicken. W/ no scalder or plucker, I was taught to skin birds. Therefore, no skin to hide water that then drains. I have a plucker now, but haven't used it yet...
Understand - i have not yet raised actual meat birds of any specific breed. I have processed egg layers & "dual purpose" birds for various reasons & usually much older than a few months of age. Too many roos, not laying, injuries not heal-able. I don't think I've had carcasses over 3#. When cooking, even just for Larry & I, i do equivalent of 2-3 birds, so have meat available for more than one meal. The most "I've" done w/ help from another couple was 13 birds - which they got some of the birds.
We did scald & hand pluck 5 turkeys & I'm not sure how many ducks @ their place later in year. I've not done turkeys since, but would like to get some for 2025. It's been more than 10 yrs since we did the communal raising & processing of the turkeys. I have done ducks on my own - again skinned.
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Edit to add - i didn't go to processing videos that showed the racks in use, but showed info on those 2 pics so you can check it out...
I did not find "pre-built" draing racks. Think I upset Google while searching. Took 4 different searches before those 2 vids finally showed up. Most were cooking/frying racks...