At my trip I met a guy. His name is Jeroen. He is repairs windsurf boards really good. He's also very innovative. But! When you travel to far places not everyone takes a huge triple boardback with weels. Those bags are expensive and heavy. With a bag like that you can take less equipment with you unless you want to pay for overweight. Well Jeroen made someting that is convertable with every board bag, it's custom made, and it will fit on every board. Here is the US box version.
You just put your board in your boardbag. Put these wheels underneeth your board, just like you put your fin in you finbox, and your heavy package is a lot easier to take with you.
More info: http://windsurfrepair.webs.com/