Might consider a small chalkboard/eraser or cloth to wipe so you can communicate and wipe clean so you don't leave paper footprint behind. You probably already have a video on it, but one of the largest giveaways one has is motion. People standing still can be hard to spot, even if not in camo. Becomes more obvious if their colors stand out against the natural colors. But even with camo movement will give you away. Animals will also give you away at times (or others). If you see birds taking off suddenly nearby, best to understand there might be a reason you too would not want to be there in a bug out situation.

Great video, and my comments were more for your audience as I know you already know this stuff.