A dealer told me he couldn't keep boats in stock, at least bass/crappie fishing boats, same for pontoon boats especially used ones.
Local classifieds they seem to disappear very fast, friend told me he had 5-6 people say they would buy his pontoon before they had even come to look at it.
How many places you have it listed, a lot of people are willing to drive a long ways to pick up a nice boat.
Give it a month. By then it should have made the rounds and you should get calls on it.
Mark 1:17 ...I will make you fishers of men