I think Ricardos question is different than the answers received, and as I understand, the question might be:
considering the Sailworks Tucker and the Maui Sails Loco, that are between different opinions the early existing freestyle sails...what about designing a sail that planes 2 knots less than them? or who can design for him a freestyle sail that planes 2 knots before them.
Making more obvious the question:
who can design a Tucker or Loco 5.8 that carries the planning ability of a Tucker or Loco 6.7, that maybe will carry the power of a 7.0 "average sail".
Looks like he is really serious about pushing freestyle and the idea looks good for me too.