Thanks for reply. I'll use a programable light like jetbeym or MJP extreme III so I can not program high- low- high but only ON Off OnTo make it less disorienting you can run it at something like 2 or 3 flashes per second. Also, make it go low-high-low-high...so that it's always on. To prolong battery life you can make the high on 30% and the low on 70% of the time. To increase visibility use multiple LEDs so the light area is large and make it wide angle.