So you bought a boat. Good for you. Did you hear the one about the two best days of a boat owner's life? How about what "boat" actually stands for? Or the hole-in-the-water line? If you did, then you'll soon learn that the annual Dania Beach Marine Flea Market is your new Christmas. It's so good that grown men with carts will be running down the aisles bright and early on the first day of the sale (usually held one weekend only in early March each year) lugging off new Furuno radars before you even get a foot inside, because the line is already halfway down the Mardi Gras Casino parking lot, and you underestimated its popularity by showing up a half-hour late on opening day. Here you can buy everything from bilges and bumpers to complete motors and props for your new baby. But it's not just a by-boaters, for-boaters type of sale. There are endless booths with snorkeling gear, fishing tackle, décor, apparel, food, and artwork celebrating the salt life. Every March, hobbyists from around the state come to hawk all things marine for what amounts to the world's greatest garage sale, complete with the haggling and walk backs and panicked telephone calls to your uncle telling you: "DO IT! Deals like this don't come around that often." And they don't, so you should listen to him.