We trailer our Mojo on a 400mi trip, twice a year. Also for the first year we towed 50miles one way to the take every weekend. I never tow with cover on and I have not had a single issue with the seats. I always makes sure everything on the tower is tight and double check that the windshield is latched.
"The Boomba" '12 Mojo 345HP
Tow Rig: '08 Duramax