One more thought.
The Radio Nav questions are very quick to answer (assuming you
know the answers

), so there is a case for answering those questions first, even if they are at the end of the paper.
Then if you run out of time slightly on the plog stuff, you might miss out on one or two questions instead of lots.
Good luck with the exam!
Backpacker, I didn't appreciate my good fortune, my room was a luxurious 2m x 1m!