I think you're right, it's going to take the army or serious police control, because there's a core element of people who seem to think that the rules about only going out for essentials, and medical appointments , exercise just once a day ( that doesn't mean sunbathing in parks and beaches)... not hanging around in a crowd..etc , and staying home ...do not apply to them.
I hate the idea of it , but I'm beginning to think if we don't start introducing, permits for people to go out ...as they have where my daughter lives in Spain...and only one person at a time allowed to be in a car unless it's your child.. ( and you cannot take more than one child)... and all shopping to be done at your nearest stores, so no travelling 200 miles to a coastal town or a national park area , and then saying you've just come to do some shopping ( which is happening here )
Otherwise if these restrictions are not put into place we're never going to be rid of this... ( today we were told we'll be in lock-down almost certainly until June)... my daughters' business is being ruined, it;s heartbreaking, but unless everyone obeys the rules, no-one will have a job at the end of it at all...