I've always thought that a high bow, like a Humber or Delta was different from a high volume bow, like a Ribtec or Osprey, which is the result of a constant deadrise hull?
I've taken a Ribtec 5.8m RIB out in a mixture of rough conditions (big rollers and short sharp chop) and was really impressed with the way it handled. The bow didn't pitch much at all, and in comparison other similarly sized RIBs, I thought it was a very good ride. It seemed like the volume of the bow helped to stop the nose dropping into the water when coming off a wave.
But, this weekend I confirmed another suspicion that I have had - that loading the bow seems to work well. I added a new anchor, chain and warp in bow locker well up front - I guess about 20kg in total, and this seemed to help keep the bow movement under more control.