We acquired a 1999 22' C-Dory Cruiser spring 2006. I did a conversion similar to those reported by Fishtales and Great Bend Charters. My goal was to provide accomodations in the cabin for four persons.
The old cushions were simply removed. With the table placed in the down position, the first task was to build "tops" for the two seat bins. I did so as follows. "Rails" were screwed to the inside of the boxes, matching those used to hold the table. I used three boards for each seat top, leaving an inch of finger space. This allows much easier access to these bins, as lifting/tilting the front board is typically adequate to gain the desired access.
The key to the project came next: building a "backboard" to fit across the entire port side, and "hanging" it. I made it out of 3/4" oak plywood, trimmed on all four sides with store-bought solid oak trim. I then finished it with several coats of stain, varnish and beeswax. It looks like a beautiful oak tabletop! After considerable experimentation, I was able to successfully "hang" it (using cabinet hinges) from the brackets into which the table fits in the up position. I also "tilted" it, which was/is accomplished by inserting a small cutting board along the top of the table and behind the backboard: as it reaches the back of the table, the backside "falls" down onto the extension leg of the table, creating just the right tilt. This makes for a considerably more comfortable seat than the original straight back.
My wife, who is good at interior decorating, wanted to add a little more color and interest to the C-Dory interior...and she thought we should be able to find outdoor (lounge-type) cushions that would work. After a day of comparison shopping, we bought some high end cushions from Sears. They are double-sided: one side has a floral pattern, and the other is striped. Two lounge cushions, facing each other, form the seat: the pillow ends turn up to form what look like the arms of a sofa. Four chair cushions form the back. We also got two "throw" pillows to round out the set. The whole looks like a real, if casual, sofa.
This backboard, since it is not "fixed," can easily be lifted out (and placed in the V-berth) to return to the gaucho/table arrangment, if and when desired. In that configuration, the two lounge cushions form the two facing seats (and the back cushions placed into the V-berth, or used elsewhere as desired).
I also came up with a couple of other uses for the "backboard." Laid flat and extended into the aisle (and supported by screw-in legs) it is used to create a double (48" wide) bed in the cabin. (One can still sqeeze down the aisle!). At dockside, it can also be laid across the battery boxes and used as a large cockpit table (I placed all the hardware on the backside to fit between the supporting battery boxes).
I carpeted the floor with a coordinated runner. (Note: the cut-to-length carpet runners at Home Depot and Lowe's are exactly the right width for the 22' C-Dory aisle! And it's bound on both sides; I fit the ends very tightly, so there is no need for underlayment or carpet tape!)
The total cost of this enjoyable project was less than $200. [/img]