1. On clear, bright days, dark lures work best. The contrast against the sky makes a more defined target. Never underestimate black and dark heads and skirts on bluebird days. Lighter colors work better when it’s overcast. In the old days, trolling daisy chains with black, dark-blue and red Mold Craft 14-inch squid worked best. Maybe, just maybe, that’s why skirts work so well on ballyhoo: They simply make the bait more visible.