Hi Whiteout this is assuming you are wanting to know its worth to sell.
I would say that deep down you already know what your boat is worth.
I would add 15% to this figure for the beat you down factor then have a bottom dollar in mind and no less.
Ultimately its worth what some one will pay for it but keep expectations high you can always come down and a beautifully cared for boat like yours will always demand a premium price