No, you can't do this. The fence is *his* property, not yours; you have no right to attach anything to, modify, damage (e.g. by driving nails or screws into), etc. his property. You have to something completely on *your* land, not touching anything he owns, to do this. If you were to attach anything to his fence, he could worse you to remove it and repair any/all holes, damage, etc. at your cost.