When the boat is on the hard at St Kilda Marina, it's about 45 minutes for us - but since the tail end of our boat is the first thing the west wind hits when it screams across the Bay, I worry about it all the time!
When it's parked at home in the shed I can sleep at night, but it's an hour or more to the water. Can't win really...
From RFC 1925: "(3) With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead."