You can look and see maybe whose rules they are using, if in fact they are using another assoc. Rules.
I have found if they want to truly see a sliding stop the pattern will call for it.
I hope you go, I found the people to be great and it is very low key compared to a NRHA show. The ones I go to have a trail class, pleasure and cow working, it gives your horse plenty of things to do. You can enter them all or just one.