KISS. Big boy teams here aren't switching because of boat cost. A used N20 is about $5-6K, new sails add $3K, you've got an $8K platform that is faster than a F18 in under 5kts of breeze (typical Chesapeake summer sailing condition). We've done enough this season to show we are fast in all other conditions and can hold on in the light. Adding the XL sail plan probably won't convince the two teams at 380+ lbs to switch to the F18.