Flipper
If running gear and hullgel are sound, older sailboats are a good flipper. Not too old.Gel coat, wood, stainless, decks, canvas, interior clean and fresh(no dieselsewage smell).Have a pro polish the gel($400-$500) and varnish the wood($200-$400) a good, smooth, clean varnish job. No slop jobs like you always see on crap boats that someone went to home depot and bought a can and a brush..... replace the canvas, yes, pay the $1,000, work hard on the interior, every nook and cranny looking for mold, etc. Replace old zink or shabby bits such as locker hasps, hinges, cleats, etc, with stainless, these are relatively cheap. Small bits make a big difference on an otherwise clean boat. Replace the running lines with suitable format however choose and coordinate colors that accent your hull and canvas. Sounds girly but it works for sellability.Analyze parts that you don't like, if you don't like it, the buyer own't either. IE: A piece of teak in the interior that looks faded or worn enough to offset the oveall appearance, fix it. A corroded light fixture, replace it and any that match.For about $3gr, the difference is amazing and can raise the value by twice that. Of course, when it's done you may want to keep it.If your boat is too far gone then nevermind, it'll never look right.