Dennis, I pulled out my regular fishing vest (I don't take it hiking) to weigh it (I've never done that before)- It is 7 lbs 3 ozs definitely not even Lightweight. ( my base weight is about this same number!) I do walk up to 5 miles when day fishing in remote drive in locations.
Besides every fly I can possibly carry in 12 fly boxes, extra glasses, Thermometer, and an assortment of stuff I don't even remember. I looked in the back pocket and found-
First aid kit
Duct tape- on popsicle stick
Garbage bag- large size
Mylar EM blanket
Elsewhere is vest-
I also carry
Katadyn water purifier bottle
I think I carry all the "Hiking Essentials" as well as the kitchen sink- I think I have every fly that a trout might eat.
Now for my backpacking kit- remember you have a base camp, this is a day excursion. It would be impracticable to bring:
Torso pads, poncho tarp (can’t fish while wearing it- I fish in the rain), quilt, pots, spoons, bivy’s, etc.
I take 2 fly boxes, gink, nippers, hemostat, 3x,4x, 5x and 6x tippet, 3-4 hand tied leaders, very small box of split shot, 2 strike indicators. I’m trying out different ways to carry the above. Right now I use a small codura pouch, but it is a little heavy for what it does. I’d like to find something that can carry the stuff and hang on my lanyard.
I also carry my regular hiking essentials kit that is always with me on hikes- depending on the weather (50%) I would take a rain jacket. You should be covered with this in an emergency.
I think Greg has a good kit though I might drop the smoke signals and the saw.
In any emergency situation Knowledge is the most important thing you take with you- knowing how to survive in the wilds is can save you pounds of “things”.