steel are you saying just anchor the boat offshore during the entire summer even when I'm not there??? I haven't heard of people doing that. I had a few buddies who anchored outside edgartown, ma harbor for the weeks they spent in the vineyard but never for an entire summer...
I was thinking more of making your own mooring. Something permanent that wouldn't drag at.
It doesn't take long for marina slip fees to exceed the value of a boat.