Gee. why not just throw it out at the launch ramp?
Make certain it's out far enough so it's still covered at low tide.
I'm sure no one would mind.

"Scott Downey" wrote in message
...
It is large heavy and ugly.
I was thinking of going into 40 foot or deeper water and heaving it over
the
side. Does anyone have a problem with this?
In a few years the metal frame would be gone and of course the wood and
cloth would rot as well. It is an old sleep sofa and IMO, too hard to lug
back up the dock.