shinfinTM fins are used as Cerebral Palsy fins because they teach a horizontal body position and good streamlined kick. The trick is to relax and let the fins flow naturally.
shinfinTM fins have a “natural resonance”, so you can just let the fins guide you without thinking about it. I’ve witnessed this with children with CP, swimming on their front and back. It can be almost instantaneous and very dramatic to watch. Also, the fin “natural resonance” kick pattern tends to hold for a while even after they take the shinfinTM fins off. People remember the feel of the kick.
If you have difficulty controlling leg movements, the natural flexibility and flex of shinfinTM fins will guide you to a more streamlined kick for freestyle, backstroke and fly. The fins are specifically designed to encourage a streamlined kick. They guide your muscles to achieve a natural rhythmic movement. Their ability to help overcome difficulties with movement control is very impressive.