I am also interested in this topic. I have Bill Solberg's T3800 "Wind Dancer".
Several of the fiberglass cabin headliner pieces seem to be trapped in place including one with the mast in its center, one with the overhead hatch in the center, and the one with the companionway hatch trim over it.
I have been wondering about cutting the panels fore and aft into Port, Starboard, and centerline pieces; and then adding fore and aft teak battens to cover the new edges. This would give access to the hand rail fasteners, traveler towers, and line organizers on the cabin top.
best regards,
Chris McMuldroch
Shilshole Bay Marina, Seattle