I've never stuffed the bow at any speed but have had a wave curl over the nose several times. Only when its steep and tight. Those are the times you either need to troll with the current or go back home and wait til calmer water. Unless of course a storm blows in quick like.
I'm afraid to see what would happen if the self-bailing v's would do if the whole cockpit filled up. I think it would probably turtle from the huge void left in the bilge and all the weight above the waterline (gear/crew/plus water). Having the old V (non-self bailer) probably saved MJ when he and Kenny got swamped! Of course you know MJ had 350 lbs of fluke in the hold as ballast!
Hope to never find out myself!!