I've gone and done this a few days ago to see what results I can get, I ordered a few various attachments to see what I can come up with but there is not much room for mounting onto the air vents with an i4Hi mate easiest and best way ive found is buy the camera tripod mount and get a bolt thats the same thread as the hole in it and you only have to push the bolt through/between air vents and its about as close to ya mask as you will get and bad for like £5-£6 on ebay