What i did starting out was reading about beach hunting and then i went out to my local beach but to be honest almost nothing of what i did read was working for this beach.
Fresh drops are found everywere that has alot of ppl but the older coins/rings etc took me a long time to start finding.
All i do is dry/wet sand hunts,never in the water and this is my experience.
To make a long story short i put in alot of hours,ALOT and i started to notice patterns for example a line that 95% of the time had alot of older coins of the same type/weight gathered at a certain line high up the beach. i also found a line from mid beach to 2-3 meters above the middle of the beach that seemed to trap silver rings/junk rings and i found 75% of the silver rings at that line from that beach so it was no coincidence.
There was also a coin line towards the tide line below mid beach but not as productive as the higher one but it was showing a clear pattern after all the hunts.
I have only found the line thing on 1 of the 7 beaches in my area to be honest but then again i have been to that beach 10 times more then the others.
i do not know if this type of behavior is common on beaches but my Point is that u need to visit the beach alot and learn ur beach.