Just make a cover for the foglight holes, or keep your foglights for the rain, if you have too much water hitting your filters, that just means your slash guards aren't on or sealing properly. this is a picture of my car with some duct tape on the back side of the bumper to keep water from going in over the rainy seasons. no issues
however the flower pot mod or a cover is really recomended to keep AIR turbulance away from the MAF