Advice / comments on selling a boat?

[gareth h]

My father is trying to sell his boat as it has become a bit much for him, it has been on the market for about a year, this is the brokerage who are selling it on his behalf:
http://www.broomboats.com/boatsales/boats-for-sale...
The price appears to be competitive, any advice on why it might not be selling?
Thanks
Gareth

[gareth h]

Yes, I guess winter isn't the best time to sell, but it's been on the market for over a year, is there anywhere else we should be advertising?