Replacement props for my 1985 Suzuki 6 hp long shaft come as follows (diameter x pitch): 7 7/8 x 5 1/8 7 7/8 x 5 7/8 7 7/8 x 6 1/2 7 7/8 x 7 1/2 8 1/2 x 7 1/8 Which one would be considered "high thrust" and would be most appropriate for use on a Catalina 25?