Shaman,
Do the deer processors up there not gut them for you or is it an extra cost or something?
I ask because here they do. Guys just load up their deer as it fell and take it to the processor. The one my friends use is about 30 minutes away and they have no issues with spoilage or bad meat in our warm temps. As cool as it is where you are, I can't see you having any issues and the time you spend hanging and gutting could be used to transport the deer and get there before the processors fill up.
Not saying you are wrong or anything, just asking??
