In our PA-25 we mounted the schweizer hook inverted, which in theory prevents that difficult/impossible release scenario. Having said that though, having experienced an upset at about 1,000 feet, the shocking speed of the upset makes me think that if it happened at 200 feet instead, no matter what kind of release system was installed, there would be no way to react in time.. I sometimes have to complain to instructors who let their students get way too out of shape when down low.