Originally Posted by Bagheera
My trainer explained it as doing a leg yield while the horse is bent in the direction it is going.
Run swiftly and in the complete opposite direction of this person if your goal is to learn dressage.
Read very carefully the posts by equitate as they are very technically correct in this issue.
A half pass is not, never was and won't ever be even remotely similar to a leg yield in aids, execution or difficulty.
Until the horse and rider have a thorough understanding of SI, TV, RV, a turn on the haunches and even a little counter shoulder in, the half pass should not be introduced.
Once these concepts are in place, a half pass is very simple. It is only a travers on a diagonal line.