Good Old Boat Magazine had a "Do It Yourself" table a few months ago. Here's the citation from their web with a copy attached.
Maybe this is what you're looking for? For all I would highly recommend a subscription to this really fine magazine. For those of us with "Classic Plastic" boats this publication is TOPS.
A tiller-friendly cockpit table
by Gary Gerber
Numerous dining tables have been designed to fit on the binnacle consoles on sailboats with wheel steering, but on a tillersteered boat, like mine, making a table and its support to accommodate the tiller presents challenges. It must not impede the full swing of the tiller, and in my case had to allow the tiller to hinge up when not in use. Another important consideration for me was the height of the table. To further complicate things, I wanted a table that was convenient to use, could be set up and removed easily, and was easy to store below.
Good Old Boat Magazine
Article Number: 6489
Issue: 101 - March/April 2015
Page No: 34-35