Get it surveyed
The best thing I can recommend is to get it surveyed by a professional. Look in the phone book, don't necessarily use the one a broker suggests.But for the initial look-see, test the engine, check the standing & running rigging, check the thru-hulls for corrosion, check the keel bolts for same, condition of the sails, functionality of the head/galley, etc. etc. I checked out a book from the library on performing your own survey and went over each item with a fine tooth comb. I didn't have my boat surveyed cuz it was pretty darn cheap but for a 28 you're gonna be laying out some dough & I'd pay the $500 to make sure everything is in good condition. Remember, YOU are buying the survey and the current owner doesn't have a right to even LOOK at it if you don't want him to. This means if the surveyor says the boat's worth $3000 more than the asking price, you're getting a good deal. But if there's a problem, prices can be negotiated with a professional survey. And if, for some reason, you survey a boat & end up not buying it, you can offer to sell the survey to the owner (half the cost is customary).LaDonna