Here you go. My cabin remodel job. Good luck.
When I finally replaced the banquet table in our 260 with a reasonably sized oak table with leaves it changed the whole interior space of our boat. I set the table at the perfect height needed to align with a new insert that fills the gap from the v-berth groove, back to the compression post and over to the port wall.
This was my solution to the often discussed table issue and it now allows for two friendly adults to sleep very comfortably in what amounts to a full sized, 3/4 bed when the easily stored filler piece is in place. The pillows are set between the port wall and the compression post so 75% of the guests weight is on or right at the V-berth section or the compression post.
The insert is 1/2" 4ply which can span the gap without any bracing as long as our fwd bunk guests aren't porkers. Because there is no bracing I can simply slide the whole section under the v-berth padding and slide the 4" foam that fits the added section up on top too. This allows for utilizing the whole couch-like salon seating.
The table leaves are oak stair treads from lowes with a little hardware and some other 1x6" oak boards. It bolts in 3 spots, strong as an ox and comes right out if needed. pretty basic. The comp post drink holder solved a constant spill problem and frees up table space. There was also a short(18") section of foam that fills the port side seating back rest that we made too.
It was a summer project in 2010 but it was a fantastic improvement for sleeping and cabin roominess.
Have fun and sleep well, Mike