Puder, I don't think anyone answered your question yet.
When boats use stonger material it allows them to be thiner and lighter. Since we don't see many hull failures this is not an issue. What is an issue is the deck to hull joint. This needs to hold together in the event of a stuff.
Aside from the obvious answer of wearing a roof, there are only things that I have seen a manufacture do to improve safety.
First it appears to me that Skater figuered out how to make a big cat lean into the turn.
Ever make a 90 mph turn in an old Chris Cat? They liked to lean to the outside at about 10 degrees. A bit un nerving to say the least.
Second, the back seat backrest in an Outerlimits. You literally slip into a bolster that hugs your mid section. Amazing security as speed even while sitting.
Otherwise what can be done. Well you could get a study to see if driving while sitting is safer than standing and if being seat belted into place is better than being thrown free in a crash.
During the 30 million dollar government study into boating safety it dawns on someone that it's nuts to let boats run at 190mph legally on a Sunday afternoon and that all boating over 40 mph should be banned in the name of boating safety.
People who run cats know that a roll over in a turn can happen at any time and without warning. It's all part of living on the edge for a few minutes.
So the answer is ---- Shut up Puder cause no one else is asking and you really don't want them to.
If your not living on the edge your taking up too much space.[