Anyone with experience with the N.S.A. proportional surge braking system

[Ann-Marie]

We need to tow our 2019 Ford Fusion Hybrid with the Greyhawk 30X.
I like the simplicity of this fully mechanical proportional breaking system.
Looking for feedback from any users?? Seems like a simpler installation with
fewer parts to go wrong and doesn't rely on battery, electrical motors, valves, electronics etc..

[Rustynuts]

Been using mine for over 10 years and works great, fast easy hookup with no brake adjusting. Simple mechanical system that works.