Well looks like there are many ways to gut a deer !
My personal method:
I don't like to split the pelvis as this exposes meat that will have to be trimmed later during butchering. Instead I core the rear end of the deer, like you'd core an apple.
Insert knife ( it should be sharp ! ) between the anus and the tail and start cutting around the anus. Don't thrust your knife too deep (maybe an inch or two ) or you might puncture intestine or bladder.
Before I finish cutting all the way around the anus, I find the urethra below the skin, behind the ##### and scrotum and follow it back to where it goes through the pelvis, carefully cutaway the connecting tissue to the pelvic bone until the anus and urethra are hanging free.
I do this before I open the guts, cause this area tends to be messy once the guts are coming out. With the back end cored, a quick clean of the knife, then I start gutting at the sternum ( I find I'm less likely to accidentally puncture the guts here. I have a short knife so it cradles nicely in my hand with the spine of the blade resting on my index finger and the back of the blade tip on my finger tip. With my finger under the belly skin, blade edge facing up so it can't cut guts only hide, I run it down to the pelvis and stop.
Going back to the sternum I start cutting upward into the chest cavity. With a stout knife you should be able the cut just off to one side of the center line where the ribs join to the sternum and push you way through cartilage.... if its too tough a small saw helps. I cut high enough I can reach in a grab the windpipe and sever it with the knife in my other hand.
Be Careful !! its easy to cut yourself instead of the deer. Pull down on the windpipe carefully cutting any connective tissue as you go. Once you get to the diaphragm, it just a matter of moving guts away with one hand and cutting the diaphragm with the other.
Eventually you'll be close to the pelvis, I usually put my knife out of the way and taking care not to rip the bladder, pull the guts out of the cavity, ripping any little remaining connective stuff with my fingers, at this point if you cored the back end right it'll all roll out in a heap.
Collect anything you want to keep like the heart or liver, put it in a ziplock you keep in your pocket or pack. Prop the deer up and the clotted blood etc will drain out the pelvis hole. Secure the ziplock bag inside the cavity, and drag your deer back to camp.
Back at camp, hang your deer. Plastic milk jugs cleaned out and frozen full of water, are handy to hang inside the cavity to cool your meat quick. Failing that, get the hide off as soon as you are able cause it holds the heat in a long time. The faster you cool your meat, the better off you'll be.
It took longer to type this, than to actually do it.
