lease

I know about the 1715 leases off of Vero Beach, Ft. Pierce, etc. Where is the Northern most leased spot? Where can you start detecting in the water? I thought I read somewhere that a lot of Spanish coins were found in that area.

Hi all, Firstly, I'd like to say that I'm a long-time frequenter of this forum, however, this is my first post. I appreciate that this topic may not be what most people are used to reading and following but I wanted to get all your thoughts on a new business idea I've been toying with for a...