On Tue, 22 Apr 2008 18:38:39 -0400, "Garland Gray II"
wrote:

I want to build a floating dock about 7 feet by 14 feet and locate it beside
a seawall fronting a body of water with a fetch of up to eight miles.

It's going to be difficult. You will need to start with a very strong
floating structure that can be moored to the bottom with heavy chains
strong enough to keep the float from ever contacting the sea wall.
You will need to run a gangway with hand rails from the top of the
wall out to the float. Ideally you need a hoist system to pull up the
gangway in stormy weather.