For what it's worth, being on the hard
is no guarantee.
In the case of Hurricane
Sandy, the surge floated all these boats off their jack stands and pushed them into a nice neat little pile about two hundred yards away.
Out of the whole lot, only and old ex-Admiral's cup boat with like a 10 foot draft
didn't get floated by the surge.
Meanwhile, several hundred boats at the same marina on floating docks survived without harm.
The last photo
sadly shows an old Herreshoff which sank in place as the water
rose. Bad Dog's rigging
got caught in the Herreshoff's rig as it drifted by, otherwise it would have been in the pile too.
So if you are planning on tie-downs holding you boat in place, keep in mind it's the other boats you have to watch out for!