The 2019 proposed US competition rules reduce the turnpoint radius for the Assigned Task to 0.5 sm from 1 sm (a reduction of the turnpoint area of 75%).

This change also applies to the MAT task turnpoints.

Reducing the MAT radius, where gliders may be approaching a turnpoint from many different points of the compass, doesn't seem like such a good idea to me from a safety perspective.

QT