On Tue, 20 May 2014 07:09:56 -0700 (PDT), True North wrote:

John, the snaps were installed at the factory to support the standup boat cover that you would use while underway.
This cover came as standard equipment with this boat.
I did order the optional stem to stern custom fit travel and summer storage cover because Legend claimed you could trailer it down the highway installed on the boat.

OK, but I'd still remove the snaps and fill the holes. I'd never trailer a boat down the highway
with the cover on regardless of the manufacturer's claims.