I have also big Dakine, it is great bag, it will eat my Tinkler and extra boards without problem.
BUT i have stoped to use it when flying cause it is so heavy. Nowadays weight limit of total 20kg, including all stuff . So i must either leave one board home or pick lighter back, or pay extra money and that is also expencive option
So now i fly with lightly badded Salomon skibag with plenty of extra insulation, which is light but durable, same stuff as folks use under sleeping bag when goin out for camping etc.