Have you run it to the side of the bumper? would be ideal to run it down behind the grills at the front.. you wouldn't need to worry about water causing any problems though. loads of people run cold air feeds all year round unless some serious amounts get up there.
hi mate, i have a spoon style carbon spoiler. not from the midlands but i am from south wales and only an hour or so from you. would be able to post it to you or even meet you somewhere along the way if the price is right