Be honest and objective about the current condition of the boat. Don't bother with where you have been with it, no one cares at this point and it add no value to the boat. Post lots of photos, start a web site if you have to with as much detail as possible about the boat. Include an equipment list. Discuss the condition of the bottom (i.e. blisters), engine,
rig and sails because these are big dollar items that a potential buyer may assume the worst about. Be available to answer all questions.