In my 15 years of ownership I find that 5M hulls 'if' slender and bow light slam like hell in chops, or sea taken at 45 ° , it really is a pain the ass .. and you have to tack if you want speed.. more length and you get a better ride
.. but these are heavier boats and dont suffer as much. Go up to 8.5 and its a whole new ball game again .. the hull length will stradle most chops and the ride is a whole lot smoother in most conditions
I have noticed though that the current 5.4 hull I have is an old Tornado design which has very aggresive spray rails, and Ive been amazed how well this boat handles, in chop , as any water sliding up the hull gets pushed down hard .. and these come right to the bow .. which many other hulls Ive looked at dont .. they are smooth up front.
Another I found succesful was a Valiant .. it did have a smooth bow, but I had a hell of a lot of weight up front, some was by way of under deck fuel tank the rest was a massive bow locker that I loaded with anchors warp chains etc and it made it handle like a peach
Edit ,, I replied to this after post #2