I have a 2400 SCR that the previous owner has applied bottom paint. It has not been refreshed for many years. Currently the boat is used in saltwater about 90% of the time. I do trailer this boat always. The longest I have left in the water is about 3 days.
Do you recommend new paint or should I remove what is left of the old paint and just polish and wax? I always scrub and wash after each outing, salt or fresh water.
My preference would always be to avoid having to maintain bottom paint if possible. However, FYI the normal prep for bottom paint is to scuff the gelcoat with like 80-grit sandpaper, so you might want to check and see the condition before you commit to full removal.
The entire bottom would have been thoroughly sanded used 80 grit sandpaper. That along with the process to remove the paint will make the hull look like crap. Sand it down and apply a thin layer of a trailerable paint and be done with it.
This decision was basically made for you by the PO.