When you go for that long walk at the coast, place all attractive items in the boot prior to arriving at the car park, better still leave them at home or carry them with you (even that supermarket trolley coin on display could leave you with a broken window). Leave your glove compartment open to show lack of opportunity. Select a space in the middle of the car park. Cover to give sun shade could conceal a thief. It has even been known for thieves to strike at cars when we are visiting our dear departed loved ones.