You'll find that most beaches are public which means you can walk on them. It gets a little sticky when there is a resort involved. Many times they have "improvement" on the beach and only guests can use them. That involves, many times, chairs, benches, tiki huts, volleyball courts, etc. So you can walk on the beach, in the water, etc, but you can't sit down, stop too long, etc. or the guards (if they have them and most resorts do) will ask you to keep moving. They can't throw you off the beach as access is public. They just hassle you enough to get you off the property.
It depends on what kind of machine they use on the beach. Most times, the machine grooms the sand by raking the sand or using sort of a roto-tiller thing. The guys that run these things aren't stupid. They know that tourist leave stuff on the beach. Many times they modify the machine by putting a sort of "catch basket" under the machine. All the sand has to pass through the basket and it will catch anything larger than 1/4 to 1/2" Whatever size mesh screen they put in there. So if they are grooming the resort beaches, you can almost bet the guys have modified the machines to catch the good stuff.
That means you need to detect between the time the people leave and when the groomers arrive. And you only have one shot at it before the groomers get it.
Watch the groomers one day. Maybe they don't go everywhere. That would make some spots better than others.
It may be at night. Have fun and be safe. Jellyfish are no fun.
Daryl
