Burton Rider's Backpack
If you had four extra arms, you wouldn't really need the Burton Rider's Pack [25L]. You'd have a super sticky silicone lined arm to securely carry one board horizontally, another arm to carry another board vertically, an arm to carry your shovel, another arm to carry your probe, an arm with fleece-lined hand to protect your goggles or music, and yet another arm to carry 25 liters of miscellaneous equipment. If you don't have six arms, maybe you should try the Burton Rider's Pack. It's armed and ready for any mountain adventure.