Thanks for the info Andy!The jury is still out wether the UV paint makes any difference. For that few decoys it is up to you. For the white I would use flat white Rustoleum.
I do have a quart of the Parker UV white, but like I said I don't know if it will help. But for 6 decoys it might not be worth getting. If you can't use it up before it goes bad in the can, it is not a good deal. although keeping it in the freezer will help it last longer.