Boat interior

Hi Ian renovating a77 Princess 25 cruiser.
I am struggling on the best way to cover the bulk heads. I’d like to use foam backed vinyl.
What is the best way to do it.
Do I stick it straight on to the fibre glass and if so which adhesive or on the ply the attach the ply to the boat.
All advise very welcome as this is my first.

This forum is primarily for paddlecraft like kayaks, canoes, and paddleboards. You would have better luck posting on a boating forum. Some of the members here might have some suggestions. If you live near a boatyard that does repairs and renovations you might try asking there also.