Best method for plucking muscovy ducks?

[Geolochookmama]

Hello, I recently processed my first muscovy duck, and I was happy with the dispatch method we used (it was a fairly large young drake, so we used an upside down traffic cone, suspended in an old barstool frame as a kill cone, and a pair of sharp, clean garden loppers for that part... it was quick, safe, and humane. My issue was with the followup. We left him upside down to bleed for 15 minutes or so, then I dry plucked it because I wanted to save as much of the down, and downy feathers as possible, which turned out fine, as I got a fairly large feather yeild. However, here was my issue and I'm not sure if I did things correctly. As I was plucking, a bit of poop leaked out of him, his skin tore a lot, and A lot of quills and pin feathers were left in the bird after plucking (which I then removed with a pair of crappy tweezers and a lot of swearing. I've read online that it's best to refridgerate the bird before plucking to tighten the skin so there are less quills left behind and to make the plucking more efficient... I don't really have the space for a fully feathered bird in my fridge... So here are my three questions which will hopefully solve my issues for next time: do you think dispatching at night and plucking/butchering first thing in the morning will be sufficiently cold for tightening the skin for next time (it gets down to about 5°C at night here, sometimes a bit colder)? Would it be stupid to put a clamp/peg on the cloaca until I gut it so theres no leakage onto the bird? And does anyone have any other advice for me with regards to plucking/butchering in future?