Regal 3300 Owner's Manual page 219

Ski Tow/Pylon
Always appoint a person to keep their "eye out" for the tow line when
the vessel is running to prevent the line from being caught in the
propeller.
Lighting-Stern/All Around
Power Towers use a folding all-around light which is mounted at the
center of the tower top. It is controlled by the navigation-anchor helm
switch. It must be used between dusk and dawn and must be lighted
when the vessel is stopped or anchored at night and shall be visible
360 degrees.
https://www.boat-manuals.com/
If equipped, a water sports ski pylon
is located center line at the stern
platform. Double loop the line first
through the hole and then around
the ski pylon and cinch it tightly.
This procedure helps to keep the
line intact when there is no strain
on it.
Features
6-59