Slide out berth.
Rod, Do yours like Richards is and as he says, use at least 1/2" plywood. Remove the existing fiddle from the front edge of the settee and attach it to the plywood as his photo shows. Note that you'll need to build a support or track consisting of a teak 1X1 or so out from the settee and to the compression post. I ended up using a very small teak winch pad as a foot for the engine cover step that had a 1/4-20 hanger bolt centered in it that went into a stainless T-nut in the corner of the plywood. It was then a simple matter of install it during use and unscrewing it just before stowing the plywood (see page 499 of the 2006 WM catalog for both parts). The T-nut was shorter than the thickness of the plywood so it slid right in place without scratching anything. I notice that Richards has a number of barrel bolts for securing his. I simply match drilled two holes through the plywood and through the fiberglass along the ourboard curved edge with it in the stowed position and used two 1/4" pins I made from stainless bolts with the heads cut off. I drilled a small hole in the bolt near the end that a cotter ring went through that I used as a handle. I also match drilled two more holes in the fiberglass with the board deployed by using the same two holes in the plywood. Trust me, that plywood stayed in place in or out. It's easier and a really clean way to lock the wood in place. My E25+ had the same slab of fiberglass behind the back cushion that about froze Marilyn's shoulders over night. I scored some 1/2" closed cell foam large enough to entirely cover the area that I simply held in place on the fiberglass with three or four stainless sheet metal screws and fender washers along the top edge of the foam. Good luck, Glyn Judson, E31 hull #55 Marina del Rey, CA