Mine get half hour run on the beach before work and same again when I finish about 4ish. I then lamp them 2/3 times a week, but this varies between 3 or 4 runs within walking distance from my house (more of a walk before bed time but with the odd rabbit kicking about) and what you would call a proper nights lamping where the dogs come home knackered! Then I'll get out once at the week end, ferreting, foxing, or running. If I don't get out at the weekend I'll run them behind the motor for 7/8 miles. I'm out the house and back in less than an hour this way.