That one I knew.
There's so many more. I wish I could remember some.
One that does come to mind is "get there before the rush" or "beat the rush".
What they meant was not to get there before anyone else but before the "Rush". The Rush was a U.S. Revenue Cutter (pre U.S. Coast Guard) looking for illegal fishing in Alaskan waters. The fisherman would try to "get there before the Rush" or "beat the rush" so they could get their catch and leave the area.