To buy or sell a boat, there are many on-line services from Craigslist and Ebay to specific yacht brokerage sites.

Typically there are several Chris Craft Sailboats listed on http://www.yachtworld.com.Search for boats type "Sail" and "Chris Craft" or the specific models you are looking for.

Feel free to browse the newsgroup at groups.yahoo.com/group/chriscraftsail or to post a "Wanted " or "For Sale" notice.