My horse constantly lazy in the hind end especially when jumping as he is a ex racer also when he trots he trails his hind end . any ideas on how to 'wake up' his hind end?

Lots of small jumps in a line will pick up his hind
Use a dressage whip and tap his butt with it and if he acts up lung him and keep using you’re whip
Do lots of transitions (walk to canter), making circles, so he has to think about where he is putting his hind end. Doing trot poles and raised trot poles all’s help
Do bounces the horse would have to jump without taking a stride so he would have to push of his hind end in order to clear the fence.Start with cross poles and then maybe put in a one stride and then two stride double 😀👍Good Luck😃
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