Originally Posted by GotaDunQH
The horsemanship (AQHA) patterns I've done have never included a sliding stop (that's reining) or a side pass. After everyone has completed the pattern, you work one way on the rail.
I guess it depends on what you're showing. My Western Pleasure expertise stretches only as far as 4-H (lol), and they have on occasion called for a sliding stop or side pass.