Thanks Wouter for referencing this ,--thanks Sam .
Good beginning to compare rating systems .

Looking into a distance race in Aug , would like to use a design based rating , but also display P-rating for comparison .
To Most if the 1.545 # is used will not understand the differences . A direct numeric scale from one to the other
with boat by boat comparison rating number --side by side is needed.
This must have been accomplished to some extent already ,
though not completely or in readily understood form .

Some Formula Classes have direct comparison numbers in all rating systems ,--like the Tornado -H-16 -A Class -now similar Formula Classes. Again the different points of beginning --different calc. used and different scale resulting makes it difficult to compare them directly,

With these types of effort the barriers and walls start to be removed and we find information and cross references complimentry systems and ways to improve the sport to benifit all.