5. Unprofessional repairs
It's often more trouble to undo the bad repair than to do it right the first time.
Example: 5200 where is doesn't belong. Bathtub caulk
I'm interested in any repairs you did that cost too much or took too long and why.
All repairs take longer than I would like but am getting better at that. I just guess at how long and then 10x that time and while it sometimes takes longer most times it doesn't.
BUT the #1 repair problem, by far, is dealing with those repairs or upgrades that were done by "professionals" who were paid top dollar, often thousands of dollars.
These "professionals" often come recommended but I have concluded that many recommendations are based on kickbacks, or ignorance.
The reason these repairs take so long is the time and money spent on them in the first place and then the time to redo the work at least enough to find all the flaws that needed fixing. And of course they often do very permanet damage because it was faster easier for them and to heck with the boat.
It is much better to avoid hiring professionals (sometimes we have to). The number one reason for this is that they are not on your boat when it sinks due to their work. The other reasons include lack of training, lack of interest, lack of time and lack of skills, all something an owner can address.
There is no doubt the POs or even COs (current owners) do crap work but they do not have the experience to hide their poor work and of course I have no problem if they kill themselves.
As for buying used boats and blaming the PO….well that feels like blaming the equipment. A good inspection will show poor PO workmanship and nothing drives down the price like poor work done by the owner.
Poor work done by the "professionals" often looks good, drives up the price, and can result in a failure in the middle of the gulf, filling the bilge with water and overheating the engine at the same time!