I had another observation on your posting. You say that most of your stalks are from opportunity or desperation and that you are primarly a stand hunter.
Now when one stand hunts, you obviously dress and gear up for a sedentary stand hunt. When you are stalking/stillhunting you really need to dress differently and use specific gear for that type of mobile hunt.
Let's just take footwear. If you are like most standhunters you most likely wear a heavy, Vibram lug soled boot with heavy insulation. You HAVE to. You're climbing trees, and your sitting still in cool/cold weather. Unfortunately that type of boot is probably the WORST thing one could wear for a stalk/stillhunt, where being quiet and able to "feel" the ground without looking to avoid stepping on twigs and branches (not to metion walking quietly through leaves) is paramount. You'd not even THINK of sitting in a tree all day with moccasin type footwear, so why not plan a day of stalking/stillhunting only where you DRESS for that type of hunt. Give it the same planning that you do a day long sit. You'll soon see how much more comfortable you are, and although this type of hunting is never "easy", at least you aren't starting out with a significant handicap. If it's not near or under freezing and reasonably dry, I wear high top Converse canvas sneakers a size or two larger than my normal footwear so I can wear a wicking sock and maybe a pair or two of wool socks. When it gets colder/wetter I wear Bean's Guide boot with the leather top, rubber moccasin sole, with Thinsulate. With these I can feel the ground quite well, and can even move reasonably quiet through dry leaves.
As far as your other gear goes, pare it down as much as you can. I can hunt all day like this with just a fanny pack, binoculars (in a Bino-Buddy harness strapped to me chest) a Mini-Catquiver over my shoulder and my recurve. Go light, and go quiet!
Offer No Apologies.....
NRA Endowment Life Member