You can adjust jumps while mounted!

Baling twine to lift end of pole into higher jump cup. Attached to small nail at the top with a loop so you can reach it from astride your horse.

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Sometimes you're doing a jumping exercise and you just don't want to get off every time you want the jump raised.  But no one is around to jump crew for you.

So I tied good ole baling twine around the pole end.  Since I have so many jump cups now I have several pre-set.  Then I tie the end of the twine to the top of the standard so I can reach it when riding.

If my horse cooperates, I can raise (or lower) the poles onto the pre-set cups while staying in the saddle!

(NOTE!  I don't jump if I'm alone.  But if the other folks are busy with their own business I am self-sufficient!)