Most airlines only use hedges as a form of revenue generation, and actually pay market price for fuel. This is how SWA does it.
Yep.
Exchange-traded derivatives are not available for Jet Fuel in the U.S.A.
Airlines are forced to hedge either crude oil or heating oil. Neither one works too well in a jet engine =)
Southwest chooses heating oil because it has a higher correlation to the price of jet fuel.