the only collapsible stick I would buy would be the Simms, the( steel cable) locking mechanism is pretty fool proof will not let you down. It's main advantage is carrying it on your belt and it is ready at a flick , however the thing that it is really useful for is a) a depth gauge probing in front of you ( saved me a dunking or two ) a steady / walking stick on rocky bottoms in not too deep riffles , if you intend to habitually wade fast , strong , deep, currents, ( the sort where your arseometer tells you are achieving positive buoyancy) a solid one piece staff as Fred suggests is the way to go, I've got into a couple of those situations and then the Simms is at the very edge of its capabilities vibrating like phone wire in the wind and a nice thick solid wood 50" stick has got to be the way to go.