Is that kite string?
I was told or read to use clear mono fishing line. They can't see it and back off from it. But my deer walk through it to get to the peas. I have white shopping bags and alum. pie pans tied to the post and line. I've heard of using a radio, they don't like the noise. But that would be about a 1,000 feet of extension cords.
I could sleep all day and sit close with a crossbow.