FYI: The Prindle used by Randy Smythe in the 86' Worrell 1000 and set the Overall elapsed time record that stood for years, known as the "Sandwich Island" boat was a P19 w/ 10' crossbars. It carries serial #X001 and is extremely light.
It is currently owned by Mr Ronny Kveck of Bodkin Creek Md. and currently is configured with 8 1/2' crossbeams w/ a set of Smythe "MX" sails.

I have never heard of a P20 but would like to know more.

Currently I'm the last P19 active on the Upper Chesapeake Bay

HarryMurphey
P19MX w/spin, Sail#86
TheMightyHobie18, Sail #9458