Hi Darryl,
I think Playstation is an excellent example of a boat that was initially designed and built without sufficient restoring moment and then after a near disaster, made a recovery. "Old Freddy" might have been blind at first but he got his eyes opened. The Playstation recovery was a major change to the boat's design and I'm sure it cost millions of dollars to fix and it should have never happened in the first place, but it did and at least the correct fixes were put in place.
Sailing in the Indian ocean at 30 knots is very different from fast sailing in the local lake at home. The lone ranger boat must have much safety margin at 30 knots especially when you are 1000 miles from the closest source of help.
In our little Mickey Mouse Speed Trials we can try configurations with little to no safety margin because if anything goes wrong, help is there in a second. On those around the world boats help is there in a matter of days in the worst case. Pitchpole is a subtle thing up until the moment of the act and then it is too often late to correct. Large pitchpole margins are necessary for safety and for mission success sailing at high speeds in the open ocean. The more pitchpole margin available, the harder the boat can be driven with success. The reserve restoring moment in a long tall bow is very closely related to reserve horsepower. Most sailors would say,"give me all of that that you've got, Mister".
Bill