I do all glass work, riigging work (standing and running, lifelines), paint and anything else that is needed if I can figure out how to do it. I am planning a redo of my awlgripped hull paint. I have done a lot of work on my A$, but got help with a vavle job when they got sticky. I do electrical but I am not good and usually seek at least advice. I would not take electronics apart, as this has rarely been successful for me. though I did fix a coffee pot once.
I do minor car[pentry but I am not that proficent, I have gotten proficent witrh epoxy repairs and minor glassing.
My boat is 40 years old this year (1973 Ranger 29, with the original 40 yar old raw water cooled A4 still running) I could not own a boat if I had to pay for all the typical stuff that needs doing on a 40 year old boat.