Service and parts, not unit sales, are the real business
Underwrite the service department first and the showroom second. New and used boat sales are cyclical, capital-hungry, and thin on margin; the durable earnings sit in service labor, parts, winterization, storage, and warranty work. When you see a marine business priced at roughly 3.6 times owner earnings, most of what justifies that price is the recurring service relationship, not the boats sitting on consignment.