Well done on the pr, I used to find that the best throws felt the easiest, well until I gave up for 10 years, now when I have no technique the best throws are the ones that hurt the most.
Number of throws - John Powell in the Dr Disc part of his video mentions when Ludvik Danek came to his town. John asked what it took to throw far, the answer was 10,000 throws a year which equates to 50 throws a session, 4 times a week.
You can get the Powell and Wilkins videos from http://www.mfathletic.com/
The best throws discussion board is
The best links section on the net (if I do say so myself) is
http://homepage.eircom.net/~irishthrowe ... Links.html