Not sure that is a good idea due to the smell spray paint gives off even after it is dry. I would just get a cheap after season vest for a buck or two and either pin it or sew it on to the back pack. No need to give the critters and more of an atvantage then they already have.
I don't wear it to hunt. Just haul meat out after the kill.
I usually just wear a waist pack to hunt in. I carry some food, and everything I need to dress out the elk. I then carry back the backstraps and loins to the Jeep. Lock up the gun, and grab the big backpack and go get the meat. At that point i'm not hunting anymore, but I think the blaze orange laws still apply.
Have you ever looked all over the house and garage for a piece of hunting equipment or an article of clothing? I sure have... or at least I used to. I found that storing my hunting gear in large containers that are labeled not only saves me time looking but also saves space. I used to have my gear all over the house, taking up space that I needed for other things.
Here's what I do now. I went out and bought some large plastic tubs and everything goes in them. I...