Right now in the UK where I Hunt the grass is chest high! The deer are only a meter or so of the floor and so you only see a small target area and thats when their stood on tussocks. I shot one this am and it took me twenty miunutes to find it even tho it was only 107mtrs away from the firing point and it fell to shot
When hunting/tracking I carry white toilet paper, I mark the POI and then as I'm tracking, I put a square down at each point I see. When you look back you can see where the beast is heading (roughly). At the POI you can hang a strip in the tree. The good thing is its biodegradable so you don't need go an pick it up after, it virtually dissolves when water hits it.
Just