I always fit the tonneau cover if I park up when touring. It keeps the sun off the seats and stops sticky fingers poking around in the door pockets.
I asked Allon White to make me a tonneau cover for touring where the zip is side to side just behind the seats. That way, when stopping, all I have to do is to tip the seats forward (otherwise the head rests have to be removed), do up the zip and fix it to the front studs. The cover has a flap that ensures the luggage in the rear compartment is covered so it stops loose items from being blown out.
IIRC, someone on TM has fitted a ring bolt in the tonneau area for a security cable.
