Bright and bright blinking lights have helped me with salmon. It doesn't happen very often, but when it does the guy that's lit up like a Christmas tree you can see from outer space gets noticed a lot sooner than the ninja salmon. That gives them the upper hand as far as making the first move, but it also makes it harder for them to hold their line too. This works really well for preteen kids who go from trying to annoy the grown up by riding right at them to complaining about how "that's not fair". Wattage in the cottage is your friend in cases like this, especially when it's on both the handlebars and your helmet.