Yes, multiple times, with a yellow highlighter -- and it has its own pouch in the backpack in which I carry all my equipment.
I always launch with a "Failsafe RTH" procedure that includes ALWAYS using a brightly-colored "helipad" that has been affixed to the ground.
If ever I lost my aircraft due to pilot error, I would be unable to forgive myself and would therefore, as a penance, have to give up the sport.