Adrian, Most people don't think about it, but old homes where the rich have lived in the past are a good location. Get permission to hunt a back yard of an old house. Basicly what you are looking for is virgin territory where the rich have played. I will give you some insporation. This is some of the finds in one yard.
I like the video...it's important to keep a sense of humor. Personally I like finding some of the old stuff that has more history than value. Probably one of my best finds has been an old army mule horseshoe...or would it be a "muleshoe"... Besides, I figure the odds of finding a long lost cache at the beach are extremely limited