slingshot
Contributor
I may be in the minority, but I think there is some use to having a marker light. On night dives, I often turn off my primary light, and just coast in the dark. A small marker (I use an elastic bungie to keep it on my tank valve) helps my dive buddy (hi honey!) keep tabs on me, and vice versa. I use a Glo-toob FX, and keep it on the "low on" position. I think strobes should be reserved for emergency signaling or at most for marking an ascent line.