What are your thoughts on this? I personally disagree with jumping a horse at this age. A girl I know has recently purchased a TB, off the track, for her first horse. She is jumping small cross bars I believe, and has now entered him in a show jumping competition! She has apparently sort 'professional' advice and 'its okay'. So I don't know what type of professional advice has been given to her, or by WHOM. She is doing the mini round at the SJ and is being told by another girl that 'you can jump way higher, just work up to it!' - some people clearly shouldn't be horse owners!