Originally Posted by iridehorses
If nothing else, such as tack, has changed, then I really would suspect something done by or irritated by the farrier. If your horse is fine without a rider, but tripping with you aboard, then I would think she is off balance. Have your farrier back out and have him watch the horse with and without you riding. If she is in shoes, then I might ask to have them pulled to check underneath.
Nothing has changed. She might do it when she's not being ridden... I haven't really paid attention to that.
Originally Posted by Appyt
I would have how she lands studied before deciding any course of action. See if the landing is heel first when not mounted as well as what is happening when mounted. Video? May help.
I can take a video. Should it be from the front or the side or both?