You will probably break it getting out. Make sure you have an exact replacement before starting. The exposed core in this part of the hull is 3/4" to an inch thick. It needs to be bone dry. We used a router to take a very thin layer of wood off. That area was then soaked with resin. After curing, the new fitting went in 4200.
Why would you install plastic fittings when stainless are available at reasonable prices? UV light just destroys plastic.
Jus' wondrin' . Capt George
Recently did a survey on a 38 open. "Elevated moisture readings on starboard side aft quarter to midships, port side elevated moisture readings around engine room vent, Forepeak elevated moisture readings around windless & foot switches, transom elevated moisture readings around stern light & on lower transom."
Surveyor estimates cost of these repairs $15-$25K. Plus there were various other items not working, pumps, frozen seacocks, etc., surveyor estimates $10-20K additional.