I read all this with great interest...so many ways to skin the cat, so to speak, er deer!
All I shot were mostly in the NE so weather was hot to start the Oct season but cooled after.
I too read that water, especially dunking in creeks, is bad biz as many bacteria in at least NE streams...
I have hosed out some that were messy inside from gut juice, with baking soda, then dried as others suggest.
Regardless, guts out as soon as possible to drain blood and get some heat out.
Next Is peeling the "bark" off (skinning) to further cool and I take off excess fat from farmland deer as my experience is deer fat turns rancid in freezer in short order.
3rd, I use blade to scrape off hair, leaves or any dirt and wipe on paper towel
4th, I then "grease" inside and outside of the body cavity with Crisco (vegetable shortening) to seal the meat and eliminate that awful hard dark crust of dried meat when you age the carcass.
5th, it goes into a cooler to age 2-3 days
6th, I debone and cut up my own meat and vacuum seal, while cutting away blue skin, fat qnd any debris to ensure great meat
last, I take all the burger meat and get it ground without adding fat...deer is healthful meat and why add domestic fat where all the nasties hang out in domestic critters?
of course, that is just one ole fart's method!
YMMV