Scubapro Surfer Marker Buoy PVC Orange 4.3 ftThe Scubapro Surfer Marker Buoy PVC Orange 4. 3 ft is a compact surface marker buoy designed for recreational scuba diving and underwater exploration. It folds into a nylon pouch for easy stowing while diving and can be unpacked underwater for rapid deployment. The open ended bottom accepts lead weights to help the buoy stand upright underwater and in currents.