In the woods sometimes we tie flagging to the pipe and up to a tree branch to make the location more visible especially when setting up control. Not in residential neighborhoods though.
Years ago we had done a relatively large boundary survey and when the client went out to look at (for) the corners he reported he couldn't find one of the rear corners. The boss sent me out to reflag it. It tied more fluorescent pink flagging to the corner and then up about 5 feet to a nearby pine tree. The client called back in a bit of a huff saying he still couldn't find it. Back out I went. I tied one end of a roll of flagging to the pin and rolled all of it out headed toward the road. When that roll ran out I tied another roll to it and kept going. Just before the third roll ran out I got to the road and tied the end to a power pole up about 5 feet. The client called back the next day and apologized, saying he just didn't walk back far enough to find it. He thanked us for taking the tie to mark it so well. I hate to use that much flagging but it got the job done.
Andy
I would start by asking your surveyor if they can discuss the results of the survey with your neighbor. It's not fair that you'll have to pay more money because your neighbor is a jerk, but it may save you money in the long run if it prevents a war or even if it turns into a war.