Ok, I thought you were saying that it cannot happen with a union. But I do disagree that you cannot use a union to get it. The problem lies with pilots actually agreeing on it first. The only way to get 18,000 pilots to agree to it is to have their collective voices heard through their "legitimate" elected leadership. You can certainly have the union lobby (happens almost everyday that congress is in session) for this. Or you can try to negotiate it with management. Either way, its easier (if not the only way) with a union at all properties.