A windsurf board bag is a much handier piece of equipment than you would think at first glance. It can hold your board, mast, sail, boom, and spare fins. As you spend more time windsurfing, you will collect more than one of many of these items. In fact, professional surfers have been known to run half a dozen or more individual setups to accommodate different wind conditions, not to mention adjusting for racing, freestyle, or just a joyride.
Without a windsurf board bag, all the spare parts that come with a well prepared windsurfing rig are liable to be misplaced. That starts costing serious cash, not to mention the possibility of ruining a day on the waves when you discover that a vital piece is missing.
A windsurf board bag has pockets for fins, and also for tools. That way you can have everything you need ready on hand when you get to the beach, so you can adjust to conditions each time, or even on the fly if they change while you are out. That alone makes them a sound investment, let alone the protection they offer to your valuable gear while it’s not in use.