I don't know anything about the B738 STOL package so I ask the question: does the angle of the spoilers really have such an effect on the ground roll? I thought the brakes were the main stopping equipment. They will be working at autobrake setting with either angles. Max autobrake is mighty effective. Does a few more degrees on the spoilers really shorten the distance? It would have to be an extremely short rwy to have a customer option for that. Surely a more effective method would be to have 3rd detent thrust reverse without any reduction in autobraking. If it was that short how far could you go on the next takeoff? Jetairfly fly charters to fairly major airports. Would they really need such an option, if it was available?