The first problem you have is dealing with Skipper Buds. I had an AWEFUL experience in dealing with them when I bought my first Four Winns. If I wasn't getting such a good deal on the boat, I would have told them to shove it up their you know whats. I would drive 500 miles out of my way as to not deal with Skipper Buds.
The second problem is refer back to problem number 1!!!! As a purchaser of a product, I had never been treated as poorly by anyone as I had by Skipper Buds.
Why don't you try selling your boat on your own? It's really simple. I have sold two different watercraft and made money on both of them by selling it myself. Maybe because I bought them right or maybe because I didn't have to pay someone else to sell it.
If it were me, I would sell it on my own. In fact, I would sell it for you for a mere 5% commission.

With regards to expectations of a used boat, I probably would have bailed on the deal too. When you are presenting something to me for purchase, especially with a boat, I form an opinion of the quality of care of the previous owner based of the presentation of the product to me. If a boat is dirty, I would therefor assume that this is how you treated your boat from day one and would move on to the next one. That may or may not be your fault which is why I would sell the boat on my own to maintain control of the quality of the presentation.
How would you feel if you went to purchase a car and the interior was dirty? Why was it dirty? What kind of service can I expect from the seller after the sale if they can't even wipe down the seats? Do they really want my business? (this is what I ran into with my Skipper Dud's experience). It becomes a trust thing on the part of the consumer/buyer. If you want some pointers on selling your boat on your own, I would be happy to assist you. Drop me a private message and I would be happy to help. Boat brokers by enlarge, are crooks. I have only found one that I would trust. His name is Adam Beck, Sales Manager, at North Shore Marine on Spring Lake in Grand Haven, Michigan. (which by the way is where this lovely beauty came from)