security is something i did consider when i first got mine
I remember driving my newly acquired Morgan back from Milton Keynes to home in Lancashire, stopped at the services and locked both doors for a 10 minute stop
I think that was the first and only time
I do put the tonneau cover across most times though when I'm leaving the car parked for a while and left overnight at a hotel or friends house, I always put the storm cover over even if rain isn't forecast
