This image shows a rack that looks like the one I mean. Click HERE to see real images and check latest prices on Amazon.
Storage of windsurf equipment allways seems to take more space than I thought. Therefore I have found an awsome solution on Amazon: Just hang the boards close under the roof!
It is called the Double SUP & Surf Ceiling Storage Rack - Hi-Port 2 Overhead Hanger Mount.
Check this link to see how you can store more than one board close to your roof.
Save a lot of floorspace and avoid bikes and other hard objects to damage your precious toys.