Backwards rules forward drools.
Bob, I tow mine about eight miles to the beach with my rudders on. If I'm going far I'll take them off. I have a Nacra system so it's easy to pull the rudders. One bolt and a couple knots.
I think it was you that mentioned crushing you car if you screw up. Don't screw up.

If your concerned you can add a roof rack like a Thule. You only need one bar and pad it well. Stick it on when you go sailing and remove it when your done.
Sort of a roof roll bar.