Fastest Skiff?

i dont know cos it does have a keel but also has a massive spinni and loads of trapezes!!

More sail area doesn't equate to more speed - in fact its the opposite.  Once the sail has to be flogged you go considerably slower and you go a little bit slower if you have have part of the sail backwinded.  The ideal is a rig which is just big enough to keep you fully extended - at that wind speed and angle.

I believe ice yachts are an example, for maximum speed the rigs are too small to give any acceleration at low speed so the pilot has to get out and push.  Once going the apparent wind increases and there is enough to accelerate the boat to higher speed which in turn increases the apparent wind even further and so until they are overpowered and they have to ease, at which point they are at maximum speed.  You know the record is around 150mph!

This is one of the reasons the Laser4000 is so fast, it has a modest sail area (if you can call 31 sq m modest) and so can be thrashed in a 25knot breeze.