This one blew my mind when I saw it.
When the board gets crowded and your maneuver template crosses RIGHT THROUGH the peg of another ship, or two ships at the same height need to touch bases but their models overlap, or ANY other reason you might need to remove your ships from play temporarily...
The straight one template is the size of a small base
The straight two template is the size of a large base
Place the template parallel to the base of the ship that's in the way, and use it as a placeholder. That way, you can remove the ship, resolve your business, and put it back in the exact same position. This saved me countless accidental bumps from trying to stick templates in awkward places (on the board, anyway. Hey-oh!)