My Marquis has the little Vav. lights on the sides located almost
midships, and nothing on the bow. I really think that's an odd
arrangement but so be it, and I would think that they should actually
be located on the bow so the length of the boat can be juddged at
night.

a couple questions. would it be better to remove them and go with a
bow Nav light? or is it legal to run both green/red on bow and sides
at the same time?

I'm opting for putting a Nav. llight on the bow myself.