These poles are "No Cars Beyond this Point" poles. They are all along the drive beach in NSB, from N to S
I would always suggest to have a 'set point' whenever you're practicing martial arts, especially Modern Arnis. A set point is equally important when practicing internally for personal cultivation.
Often my internal 'set point' is nature itself, especially water. My personal preference is the Ocean, a good waterfall is a close second.
Enjoy your practice!