What is the difference between a light seat and a two-point in hunt seat riding?

The light seat and the two-point are related but distinct positions in hunt seat riding that are sometimes used interchangeably but that have specific technical meanings and specific applications that distinguish them from each other. The two-point position, as the name indicates, involves the rider's weight being distributed through exactly two points of contact — the two legs — with the seat lifted completely clear of the saddle and the upper body folded forward at the hip angle appropriate for the size of fence being jumped. This is the position used over fences and in extended two-point work on the flat. The light seat — also called a half-seat or a modified two-point — is a position between the full three-point seat and the complete two-point, in which the rider's seat is just barely out of the saddle, hovering very close to but not touching the leather, with the upper body slightly inclined forward and the weight distributed primarily through the legs but with some weight available through the seat. The light seat is used in situations where the rider needs more flexibility and lightness than the full three-point seat provides — galloping cross-country, riding forward on a hunter course approach, following a very forward and athletic canter — but where the complete removal of the seat from the saddle in full two-point would reduce the rider's ability to communicate through the seat and back. Some trainers use two-point and light seat interchangeably to describe any position that lifts the seat from the saddle, while others maintain the technical distinction between a truly lifted two-point and a hovering light seat. For practical purposes, developing security in both the complete two-point and the light seat allows the rider to choose the position most appropriate for each specific situation rather than defaulting to one position regardless of context.