PP works by increasing and decreasing the length of the throttle cable a little bit to adjust the boat speed.
Before PP, the turquoise and green dots where connected. After PP, you have added a piece of variable length cable.
PP works by letting out (paying out for the brits) or hauling in a little bit of cable in a system where the throttle cable is in tension. My system pushes the throttle to open it up. Unfortunately you can push on a string....
The only hope that I can see is to convert my throttle system to a "pull" which means taking apart my helm control and thinking a bit (a least 3~4 beers)