My line of thinking is that if a boat was neglected, no amount of spit & polish is going to bring it back and the neglect will show and be evident on close inspection.
I use my boat for pleasure, fish my boat, lobster with it, etc., etc., etc. BUT... I take really great care of it. Care = all engine maintenance per the Yamaha schedule, always run Yamalube additives, always flush the motors, never use cleaning products meant for the home (e.g. bleach, scouring powders, etc.), detail regularly, shrink wrap during the winter, etc., etc. I see boats that aren't well maintained and it shows even after an attempt at reconditioning.
Just my $00.02.