I hunt urban deer in CT...kill a lot of them, and gut most of them for me, my dad and my friend. Probably gut 8-10 deer a year. First step for me in gutting is to stick the butt out up the ass and get the canal out. Then I gut.....
The butt out works great....only a few times did it give me issues.....mainly when I was trying to pull too fast. You gotta stick it in deep..twist, make sure it grabs and use a slow pulling tug action. Pulling too hard will make the intestine break. I do cut around the anus at times, but the butt out is way quicker and cleaner.
If you have a deer that's cold or been sitting a while, I'd say the butt out probably won't work very well. Everything needs to be warm and loose to work.
There is no need for saws, zip ties, and any of that bs......the only time I saw a deer is when it's a big deer over 150 pounds dressed and its' warm out, so i can really spread the hams and get ice in them so they don't bone sour.