I'm sorry, but I just have to say something about this. The Laser is arguably one of the most weight-sensitive boats ever designed. And that is probably why they have three different Laser classes: The Laser 4.7 for the younger kids moving into Laser (and it involves a separate mast section); the Laser Radial for older youth and women; and the Laser full rig.

The optimum crew weight on a full-rig Laser is about 165 pounds. (That is what I was told by an Olympic-level Laser sailor.)

So the Laser has three different classes with three different sails, all to accommodate three different weight and ability levels.