Walk from 1st ave north to 36 ave north, and sweep as much sand as possible. That's where most of the hotels/people are.
Remember to bring lots of chad with you, to plug the parking meters every hour, or you'll receive a nice ticket.
Do your early morning search along the boardwalk area in downtown M.B. The girlfriend can do her shopping there, while you sweep the area. Don't be surprised if you see more than just one person doing the same thing.
Watch for the homeless!
Don't hunt at night or you may end up losing your machine, unless your carrying.
The peak season is pretty much over, after the kids went back to school.
Also check along the areas where they have been setting up their tents. At times it use to look like a tent city near the dunes. And watch where they set up the rental chairs. After everyones gone, sweep that area too..
GL&HH