Mike, Throw (at least for me) is what the distance is when they are fully extended. As I understand the springs are fully extended when the box is up and open and they are compressed when box lowered- therefore providing both resistance when putting it down ( not allowing smashing of toes unless you are very slow) and assisting in not having to do a 70 lb Bicep curl when opening it up.
Buoyhead- Hope you survive the superbowl and weather!!!! Hang tough. Wing