We used jacklines routinely to the point of just keeping them rigged most of the time when moving.
Most folks run them down the walk ways. This will kill you.
Where do you lay the jacklines?
The length of the tether will determine how far over the side your head will be?
You only need one working engine. That is why I have two.
Sea Sanctuary-new to me 1992 Bayliner 4588