+1 on the propane lantern. Too much reflection from the headlamps if you're in the water. I fashioned a steel dowel with a handle and ground the other end to a point. Then used large hose clamps to hold the propane bottle to it. Solo I just stick it in the sand and it's held up high enough to survive a wave. With more people you hand it off when you find a show and are left behind to dig while the others continue the hunt.