Croggin' Schmoggin

From what I remember they arrive when they spawn, but no one's in the map (they're inside the ship). When you exit the ship, you see their ship but no Crogs.

I'm not sure if I'm understanding you. You're saying if no one's outside when the ship arrives, the Crogs won't spawn? Sorry if I'm misunderstanding. I rarely ever go inside the cabin, and I'm positive I was outside when the ship arrived. No Crogs ever spawned. Boat just chilled there.