Skip the wheels if you want to save on weight.
A lot of airports have nice smooth floors and the bag slides easily, carry it when you get to the course surfaces.
I have a triple coffin, it's been going strong for years, fits 3 kites, 2 boards, Harness, Bars, ++
www.oceanearthstore.com/surfboard-covers/double-coffin-shortboard-board-cover/