M_Boats: Sail Area M15

Wrinkle Boat Mates Am in the process of buying used standard sail from Daniel (Have you heard anything from Judy B/Hyde yet about your new sails?) Was wondering What the difference in the Main SA is between a standard Main and a Fatheaded Main. As I sail on a inland lake in NWI I have found that I am in light air most of the season. Much different than Lake Michigan my previous sailing venue with my Pearson 23.