Foil Boardbags
Foilboards need bags built specifically for them. A standard board bag will not handle the weight of a mounted foil or protect against the sharp edges of a front wing.
Look for reinforced padding at the nose and tail, and enough internal room to carry the board with the foil either attached or packed alongside. Separate compartments for the mast and wings keep them from grinding against the board deck in transit.
If you travel with a foil setup, the bag is doing serious work: a foil is heavy, awkward and expensive, and airline handling is not gentle. See also foil bags for the foil itself.