my five year olds ears "fly" and my 4 months old have been massaged to lay natural. Just whenever you notice them flying, flip them back to natural and gently press the fold in the corrrect seam. It's almost like the natural flop fold wants to invert, causing the ear to "fly" as the y say. Just lift your pups ear and "refold" it to the right way and massage the fold. THe fold is where the ear bends towards the face. Taping can be a little tramatic, if it has to be done alot. They will then associate touching of the ears with any pain that might be inflicted with the removing of the tape or the positioning of the ears.
There is also HAIR glue that can be used instead, you would take a bead of hair glue along the inside rim of your dog's ears, then press it to your dog's head where is to be positioned. You have to hold it for awhile BUt it wears off naturally and there is also a glue remover that is not toxic to humans. But with any chemical don't let your puppy eat it. I have personally tried this, but I have found that you have got to also glue the outter portion of the ear where the fold wants to invert. This isn't reccomended unless you clean it on a by-daily basis, as bacteria and dirt will accumulate. Rubbing alcohol usually takes the glue right off. I personally do not like to glue ears unles they will be of show stock, but that's only because of the time it takes to make that dog look perfect. They are already perfect in my eyes, to bad the judges can't see the way we all do. I have a problem with alcohol smells, and smells of some methane based fumes, like ether, can't go to the vet's office for very long at all, because of this.