Try d'angles stirrup pads. Jump For Joy
It worked well for me. And improved my balance over jumps 100 fold the first time I used them. You'll feel the stretch to. It hurts a little at first but you get used to it real quick.
They sorta work like training wheels (or training heels, lol). After riding with them for a while you can go back to flat pads and still ride just as well.
You can even use them at shows. Or at least I can. I've only gone to schooling and C rated shows. You might want to consult the rule book for A and B shows.