Here's what I did for my L25...
I also wanted to make a single surface in the cockpit for sleeping so I epoxied a couple of rails along the side. Then made two platforms...a smaller one that I use while sailing to put my chart book on top of etc and a longer one that becomes my table. I bolted a couple of key-hole brackets at the end of the cockpit that supports two legs and a third leg, forming a tripod is forward. All three legs screw into t-nuts, which are recessed into the top of the table. The table is made from 1/2" solid-core oak plywood and has a trex (synthetic decking) edge all around. I only have a couple of photos showing the rails, having breakfast on Lake Mojave with my son't former Boy Scout Troop, and my son reading before bed. But would take additional photos if you would like.
FYI...doubling up the cockpit cushions and a twin air mattress fills up the cockpit space nicely, but I wouldn't want to be much over 5'8". Steve