Fair points, though declining to join the Class Association in protest is not the same as lack of interest. Ranking the fleets by possible members may be somewhat inaccurate considering multiple owners and data lag with boats changing hands.

District, Members (rank), Posible Members (rank):
D. Chesapeake -- 15 (1), 67 (1)
C. Long Island Sound -- 7 (2), 59 (2)
I. Pacific Northwest -- 4 (6), 58 (3)
G. Gulf Coast -- 6 (3), 54 (4)
A. Northern New England -- 5 (5), 50 (5)
B. Southern New England -- 6 (3), 44 (6)
J. Western Great Lakes -- 4 (6), 36 (7)
K. Eastern Great Lakes -- 4 (6), 36 (7)
Other -- 1 (12), 30 (9)
H. California -- 2 (11), 26 (10)
International -- 1 (12), 16 (11)
F. Southeast -- 3 (9), 13 (12)
E. Carolina's -- 3 (9), 7 (13)
Total -- 61, 496

(Note: this counts names from the public class membership roles, not boats.)