Addendum- I knew a fellow who went moose hunting in Canada many years ago. Keeping it short, the moose had a solid hit but decided to go out into a lake and give it up in four feet of water. That was 4 PM. They were finished field dressing it and back in camp at 1 AM the next morning!
The first moose hunt I went on was while I still in the Army. I went hunting with two of my Army friends south of Anchorage. We hunted Saturday and Sunday with no luck, but as we were driving out of the area late Sunday afternoon, we spotted a small bull just off of the road about 200 yards away. The ground between the road and where the moose was sloped down not very steep but moderately so. That were cars ahead of us and beind us. The moose was in in plain sight but nobody seemed to notice it. One of my buddies rolled out of the car while I tried to find a place to pull off ot the road.
By the time I got parked, Roy, my buddy had killed the moose. When we got down to it both of my friends admitted to me that neither one of them had ever killed anything larger than a rabbit. I had taken several deer in Oregon earlier in my life so I had some idea of what to do. It was one in the morning by the time we got the last load of meat back to the car.
The car was a 55 Olds and while in the service money was always short. I had one tire on the car that was completely bald, I had bought it used for two dollars. On our drive home there were several porcupines in the road. I was actually afraid that if I hit one of those quilled critters that it might pucture that bald tire.
We made it home. I was married at that time and had a home in Anchorage living off base. We got the meat hung up and I drove the guys back to the site where we were stationed.
Now I know why the hunters in the cars on the road that evening just passed the moose up. Kinda like the story that you told about shooting the moose and having it die in the lake. Those animals, even if a young bull can be a very difficult to field dress and pack out even if the pack is a short one.
The only moose that I actually shot was at the end of a runway that had been cut out of the bush. We drove the pick up to the moose, another small bull, and hooked themoose to the truck with a chain and dragged it to the cabin that were staying in, that one was easy.