Everytime you get somewhere entirely new, MAKE A PORTAL.

Give it a unique tag, and make a note on the map with the exact text of that tag. First time I sailed to a new continent, I landed.... walked 50 feet from the ship, and got god stomped by a reallyyy pissed off 2 star troll.

I had, when only 10 feet from the boat, put down a portal. Yes, indeed. I re-armed and went back before he'd even wrecked the boat.