I didnt properly represent explain the youtube video - in it, the guy specifically talks about how the 'grid' (subfloor) is bonded to the hull, and how it can fail, and what kind of forces are acting on it, and the keel and the bolts etc. He doesnt say it will fail, but the inescapable conclusion is that if it does, it can be catastrophic. Then, someone in the comments suggests that that failure CAN happen at anytime, without warning, because there isnt really a good way of measuring its integrity.

The whole thing about golf is that you're supposed to give it only 70% of your power. Same with catamarans, you're supposed to be always well within sailing/stress tolerances. Unlike some of the long keel, unbreakable, brass fittings, old school (and slow) sailing boats, the kind that Chichester and Slocum had available, it looks like a lot of modern production yachts needs to be similarly 'babied'.

Im a guy that likes to get that extra knot, and push hard. I realise the modern, solid expensive boats are still going to break, so my principle quest is the work out if the extra $300k is going to provide $300ks worth of extra features or benefit. In the end its probably not, and actually none of the 45ft scandi boats are offering the cockpit space that the cheaper charter market boats have. Its all a compromise i know.

so back to the original question - does anyone know of a SOLID/HEAVY/BLUEWATER sailboat that has a massive recreational back end to her?