I have the same BlueWater Cybermite on my trailer and they are lifesavers. Mine are angled downwards so they do not blind anyone but they light up about 3 ft high across the back of my boat down the ramp and on both sides.
Here are some shots during the day - at night they are perfect. They are waterproof as well so no worries on the trailer. Took about 1 hour to mount and wire up.