Mr 737 "Captain" is obviously wrong for all the reasons listed above. In addition, SWA treats jumpseaters as good or better as anyone, it's a safe bet that his little rule is in his mind and not listed in any ops specs anywhere at SWA or any other airline. Finally, who says a snowboard is not normal commuting baggage? I go snowboarding on our PDX layovers as do many of our pilots. Bringing any kind of sports gear is certainly normal commuting gear and a good idea for staying healthy in our line of work.