My wife installed a Lagun Adjustable Swiveling Cockpit Table Mounting System last week, and it's great! She re-used the existing table top for now, but we'll eventually replace it. She welded up a bracket (from some scrap) which mounts in the pass-through area to connect the systems' vertical plate to the floor, backing plates under the pod help distribute the forces. This obstructs the pass through somewhat, but we didn't see any alternatives.
The table now swivels around both the vertical bar and the center of table itself, allowing it to be moved into various positions. It can also be adjusted vertically, and removed totally off it's mount. The vertical bar itself can be removed and attached to underneath the table. The whole thing then placed down into it's original bed support configuration. Only takes a minute to setup and take down.
So far we've taken it down while underway and used the original straps to secure it while underway, but we've talked about adding an attachment point to the back wall so we can simply lower it and tie it down without having to take it all apart. This would make it even easier to have it available during the day if we're stopping for lunch.
Being a cantilevered top it's not quite as steady as the old table, even with large backing plates it inevitably flexes a little... so no kids on the table, for sure. Still reasonable solid feeling, and perfectly usable. Having leg space, being able to move it out of the way to get up and down, position to the back to have open floor space... it's awesome. Great product, all aluminum, works very well. Highly recommend.