Oldshot,
I think that you can hunt as hard or as easy as you want.
I am 20 years younger, and some days I just haul @$$ up a hill. Other days, I don't feel like it and I can take an hour to walk half a mile. I see more elk on those latter days.
Since you are retired I would highly recommend getting out to CO early and getting used to thin air. Just walk out in the woods, take it easy. Fish, camp. It is beautiful in the fall. Then, when the season opens, hunt easily. I have seen elk from the camp, too, while others were beating the hills and saw nothing. It is a total gamble.
My friend's dad, at 91, was hunting with us. We were all in the hills, looking for elk. He sat 50 yards from the truck in his chair, and got up to the truck to get his sandwich. This is when two elk trotted across the hill side 100 yards from him, and he just was shaking his head - his rifle lay across his chair
And, he was the only one to see elk all day.
Just do it. It is your hunt, you hunt it the way you want.
