Learn how to get the winds within limits (whiz wheel, mo board) and recommend a course to the bridge. The wind hunting circle makes your ship and CO look like an ass. A smart ship doesn't need to turn 360 to get the winds in.
It's been said, but know how to work your systems.
Wind and pitch and roll limits are just that, an AND, not an OR. They both have to be in.
Don't let your deck guys hook the rescue hoist to the deck when doing HIFR.
Ensure your flight deck crew is sharp. Getting the fuel hose out shouldn't take 30min. My guys are going to want to see a fuel sample. For chock and chains, everyone loves the hustle.
When it comes to box lunches, think like this: would i want to eat this in a moving car? If all else fails, be like Mom and send us a bunch of PB&Js, cookies, and some cokes. It's pretty much foolproof. If you give the mail helo bread on bread sandwhiches, don't be surprised if you don't see mail for a bit.