If you think of any beach as 4 seperate beaches it becomes easier:
1. Dry beach> anywhere people put there lounge chairs, play volley ball, build sand castles etc. Most beaches the lounging area is in a straight line down the beach, making it easy to ID and just walk and hunt the lounge line.
2. Tide line> part of the beach where everyone walks toe rings, people shaking water off arms after coming out of water etc.
3. Tide line to 1 foot depth>> Area mothers take there children to rinse the sand off or after going pee pee, skim boarders etc ..
4. 2 foot to chest depth> Area where people go to rinse sand off in the shallows, going in to cool off, or take a leak, area in deeper chest depth where frolicing occurs.
This applies to any beach, does it get raked every nite by the beach cleanup crews, if so you want to beat the raking, if not then Low tide gives you more beach. The rakers just hit the dry sand area stopping before the high tide line.
Break the beach down into parts, a beach is huge and can overwhelm you if you don`t stop and analize it. If you don`t have a water detector specialize in the area you can (dry sand) study it and the people, where do they lounge,play volleyball, build sand castles, anything that perhaps jewerly could slip off of suntan oil soaked fingers. Some people take there jewerly off while laying on blankets, setting them on one side, wait for a really sudden fast moving storm to hit, everyone jumps up grabs the blanket and runs, it isn`t til a couple mins later they remember the jewerly they took off and placed on the blanket beside them.
These are just a few ideas to help ya along, there are many more. It takes time and many many hours/days of working any beach to learn the signs and tricks, once you learn the normal weather beaches then you have to learn the storm beaches, as one is totally opposite the other, after you learn both then its a """BLAST

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Best of luck and study those beaches.