Whilst we wait for Dr NM to add to his diagnosis, Didn't know you were using a snowman if that is the case that hair with 12mm and 15mm might be a bit short as the bait will be sat right on top of the hook (which is not a bed thing sometimes), but if the fish are a bit smaller might be worth giving them a cm or 2 to hang themselves and take the bait right back into the mouth cavity taking the hook with it.