Velocity. Trimmers feel an increase first…before the numbers confirm. Using sheet as speed barometer, they’re also the first to know when pressure softens. And they respond.
The 7 ceramic ball bearings in a new Zircon block overcome inertia from friction so easily, information flows acutely through the sheet. Simply put, trimmers feel and better match sail shape to the new condition–often the difference between winning and not.
At top wind ranges, you need more purchase to trim harder. Go for it. When the breeze backs off, Zircon blocks let you ease…even through all those sheaves.