Recently I took my first of what I expect will be many Outdoor Discovery School classes. Stand Up Paddle Boarding has increased in popularity in recent years, and the interest has increased the number of places one can buy a board or try one out for an hour or two. (Many waterfront outfitters that provide small watercraft also rent paddle boards.) Though it takes some coordination and balance, it is a fun activity that provides a good workout. For my first experience, I chose a class at Lake Nockamixon, (Bucks County, PA) run by the Center Valley L.L. Bean store. Arriving a bit early, we has plenty of time to…