"That would require someone actually be standing watch with the ability to maneuver the vessel.
"
No problem , with progress in next iteration "Captain" autopilot and the GPS will have a horn sensor added with FADEC, auto throttle.
It will slow for 1/4 mile and go back to maximum wake mode automatically , no need to bother those aboard.
All will be reported via wireless to the boats owner when he wakes up.