i wait a day before i skin not much blood that way,do it when first catch lots of blood.

For the guys that wait to skin what aboit the green belly

That's what I' wondering too!

That green belly thing is overblown. I've bought coyotes before that when skinned, they were green from head to tail. Yup, they stink, but very few ever lost a hair. Keeping them out of the sun is the most important. Now, leaving a yote to skin till the next day is not too much fun in warm weather, but when the temp drops to the twenties over night, I either hang by a front foot over night (so the blood runs into the body) or lay them on a cold frozen ground or pavement over night. Next morning I put them in the fur room so they unthaw and can be skinned that night. Only a few drips of blood around the eyes, ears and mouth, it ain't running down your arm like a fresh one does.

On the green bellies, I just skin the next day. 12 hours if it's warm. Lay them on their backs (like you do rats) and that helps as well. All depends on the temps of course. You get a feel for it.

I wash almost 100% of them

I wash almost 100% of them

Green belly is not a serious defect until it turns really dark brown or black, then you will start to see some slippage of fur. I have often had coyotes hanging for 2-3 days (even 5) in the shop at 40 - 60 degree F temperature with no problem. The initially frozen coyote in this picture was hung face down for 5 days and was perfectly fine re fur slippage. If you’re worried about it, wiping the area with vinegar or 3% hydrogen peroxide solution will kill the bacteria causing the rot.

What's your process

Just an FYI, the vast majority of slippage happens in or after the rehydration process. You’ll never see it, it happens at the tannery. Wiping with anything like vinegar doesn’t do anything. And using borax will ruin a skin if a small time tanner ends up with it. Large tanneries work with huge pickling tanks,’so the odd skin with borax will usually be okay. But I wonder how many furs get get thrown out because of handling practices people are told will work, when they actually don’t.
I’ve tanned a lot of skins and coyotes and fox will teach you in a hurry what will and won’t work.

I skin it then run water in a mop bucket, rinse wring it out with mop wringer, maybe rinse again and wring, then snap fur to shake a lot of water out of the fur
One I snared this year died right away, no blood or dirt on her, so I didn't wash it

If they were alive when you caught then, if hung up in a cool dark place, green belly will not be an issue. If it was a problem, I wouldn't do it. I would think the problem for you Wisconsin fellas, would be to keep it from freezing over nignt!