I have an 18 foot pontoon. My question is since it has the square nose where I should mount my lights? I have 2 400s and 2 600s to work with. I was thinking the 2 400s on the front and 1 600 on each side. If i did that and had them pointing straight out will the corners be dark? I'd really like some input so I don't have to mount them 2 or 3 times to get it right. If i have to I can fill the corners with 2 50w warm white leds but would rather not have to do that....