A major difference between harrys and cats is that the windward hull sees the waves and lifts before any overhangs to leeward are slapped.  Actually, the same happens with a cat, but the hulls are interchangable, whereas on a harry they are not.  Therefore, the harryproa windward hull overhangs can be much lower as they will not get hit by the waves unless motoring directly into them.   The bits getting slapped by the waves are more than strong enough to take it, but the noise and jarring might be irritating.  In which case, change course by 10 degrees, or sail. 

The interior of the windward hull is, like all the Intelligently Infused hulls, pretty easy to customise.  By the time most builders get to this stage, they will have all the knowledge they need to do so.  

The platform ends are infused without the inner layer, which is added (infusion or hand laid)  post bend.