Factory Kicker In-boat Speakers
Yes, bow is Pre-wired, but not connected to the headunit - unsure if factory amp is wired (both boats I've done didn't have factory amps).
Best way to cut the vinyl - feel for the center of the hole, then go to one edge and cross cut, then go 90 degrees in the other direction, basically making an X.
The hardest part is that the factory wires are really short, so you have to be careful to make sure they stay connected, or extend them.
Before;
http://img.tapatalk.com/d/13/06/02/7avuzy2a.jpg
After;
http://img.tapatalk.com/d/13/06/02/adere6yd.jpg