Antares has just launchd a Factory Certified Pre-Owned program and the first
boat has been listed. This is not FSBO but the commission paid by the seller under the program is substantially less than paid to a regular
broker, so if potential savings are the motivation for your question this may be of interest.
https://www.antarescatamarans.com/antares-pre-owned/
The Antares/PDQ 44 owners group appeared pretty receptive of this program and owners may be moving that way right now rather than FSBO. I do not know of any FSBO
boats but if there are any and you want to pursue it I can put you in touch with the person most likely to know of any. If so PM me.