don,t think calling P rating a really helps fix the numerous problems that stem from the faulty basis of P-rating .

A design measurement rating system would accomplish the difficult task of rating boats fairly and subsequently equal classification of racing groups and modifications as per H-18 and numerous others much more accurately plus be much more integral with box rule type growing classes based on basic design measurement principles ,--that again are REAL -one dsign -Formula class based .

Hope your comprehending the difference .