A buddy of mine used tie wraps, sounds crude and ugly but it turned out pretty good. He put 3 or 4 tie wraps around the bars AND 4 other wraps under the bar (they run perpendicular to ones around the bar). He snugged the bar ones up and held the flashlight under the ones under the bar and used them to hold the flashlight. He was careful where he put the locking blocks and used black ties. Actually looks fairly decent.