Sandman:
Dont think I have not considered it !!!
I was thinking of making the anchor, attaching 30-40 feet of 3/8" line, putting the whole thing in a handy bucket (like I use), and selling them ready to go. They are stainless and DO NOT RUST..
The one I posted I used for many years, I now have a slightly lighter one.
I could make millions !!!!
Maybe in my dreams,, but I have thought of making them for local boat/tackle shops. The idea is still kicking around in my head..