You cant do or use that, can you ?

Although Im a salty dog, Im just at home in swamps, marshes, a river or muddy field. 
One important thing I have learned over the years is you have to have the target recovery tools for the job, especially when you get "Squadded" up as they say in Lincolnshire England. 
Two things I always carry and use to help me locate and recover targets is a waterproof pin-pointer and a decent size flat head screwdriver.  
I believe I have probably used a spade more than a long handled beach scoop this year. 
Pin-pointer, flat head screwdriver and garden spade are not your normal beach or water hunting accessories, but I promise all will be revealed about my unusual choice of target recovery tools by the end of the year.
I look at target recovery tools like metal detectors and search coils, you use what is best for recovering what you are searching for in the areas you hunt.
I also have a target recovery tool bag in my vehicle just in case, consisting of needle nose pliers, a 250 pound strength pull magnet and a hammer and chisel, don't ask lol !
My choice of recovery tools should tell you a little about my style of hunting, I search places many other beach and water hunters do not.
I use natural coin and jewelry traps to my advantage, any area that is difficult to recover targets at is a great opportunity for an enterprising beach or water hunter, assuming you have the recovery tools for the job.
Rocky areas, coral ledges, thick mud, shell layers and hard packed sand are all jewelry and coin traps provided by mother nature to help a beach or water hunter.
The tougher it is to retrieve a target, the more chance that object has been there a long time.
For example, some people see a large boulder on the beach as an obstacle to walk around, I see that boulder as a coin, jewelry or artifact trap to search above and below.
I would also scan the boulder, just in case it is hiding something in a crack or crevice.
Sometimes good things are stuck between a rock and a hard place, if you are prepared to put your scoop down.