the price-demand curve. Very basic - the higher the price, the lower the demand. With something like a mooring, where the cost of the product is fixed regardless of usage and very little actual marginal cost (marginal is the cost per unit consumed), the price should be set for best overall profit (full or near full occupancy). The boating industry seems to forget that.

It's like the kid selling lemonade for $1,000,000.00 a glass. When asked the kid says: I only have so sell one!