From my days in Uncle Sam's yacht club;
Fifty feet of flight line,
a bucket of propwash,
the infamous mail bouy watch, gotta get our mail ya know.
Probably the best was the Go NoGo gauge, which usually causes the newbies who have been a victim of one of the above to scoff and vow that they aren't going to fall for that. However, a Go NoGo gauge is an actual piece of equipment used to determine if a deck padeye (aircraft tie down point to you uninitiated) needs replaced. If the jaws of the gauge won't fit over the bars of the padeye...hence NOGO, it is not worn enough to replace. On the other hand, if it GOes then so must the padeye.

Chip2447(who paid close attention to the stories tha his uncle told him of the U.S. Navy, and used mail bouy watch time for a much needed break)