Mike, couldn't agree more. I see guys pulling boats up around 80/90 all the time. Everything from bass boats to 42'Tigers and everything in between.
The one I saw yesterday the trailer was pointing in the wrong direction, but maybe it had been placed that way for some reason.
While my truck is capable of pulling my boat effortlessly at 85, tried it just once to see what it was like, I trailer around 65/70 mph. I want to be able to get it stopped quickly if I have to with some sembelance of control.