My western saddle ALWAYS slides back when ever I ride, within the first few minutes. I was thinking for Western Pleasure that I would get a brest collar so my saddle stays in the right place. If a brest collar is too tight, would that effect movement? I would think so, I think it would restict the legs. But anyways, is it proper for western riders to use a brest collar? I mean I never see them on wp horses unless I go to lower 4h shows.