This is simple. If you cant find it, you must log a DNF. DNF's are part of the game, even though none of us actually likes to log one, but again its fun to read logs reading someone didnt find it. Im sure some diehards will be able to find it with ease but others wont be so lucky. So as always have fun and happy caching.
It May be magnetic, it may not be.
Please place back as found!