Sit on my Pockets

I'm trying to ride with a shorter stirrup. Its hard for me to keep my but from bouncing up and down. So when I wrap my legs around the horse I tried pulling myself down into the saddle so my butt wouldnt pop on the saddle. So I wouldnt have to rely on to much of a rediculous pelvic thrusting to keep my pockets down. So when I wrap my legs around the horse I pull my butt into the saddle. With my but I push with the horse. With my legs I kick and pull up. Not really a kick but a wave- calves in contact and sometimes spurs, pulling up and back wich brings my butt down and when it comes down I push it forward so I'm not flopping, my legs arnt clinging but wrapping and waving and with all of this I'm driving the horse forward in a rythmic motion. Supposedly anyway. So I did this on my rundowns and it felt like I was driving the horse forward and his head was staying down and I wasnt flopping around up there. I think it helped. I think it was correct. I hope its better horsemanship and helps the horse and helps me be a better rider, trainer, driver and horseman.