Here's the Lituya Bay wave heighth quote:
Almost immediately after the earthquake and the giant rockfall of July 9, 1958 at the head of Lituya Bay, a massive mega-tsunami wave splashed to a maximum height of 1,720 feet on the southeast spur of Gilbert Inlet. The wave spread across the rest of the Lituya Bay wiping everything in its path on either side, over an area of about 4 square miles (10.4 sq. kms).
I still take being in a boat over being on top of a house when it comes to being out to sea.
From what I see of the video of many of the boats being tossed about is that they are actually riding it out pretty good. It's just that the boats end up on dry land when the water rushes back out. They behave like boats, can not do otherwise regardless of the speed of the wave.