I have a good relationship with the surfers where I fish, sometimes they know if there are fish in the area, which is priceless. I just fish around them.
Last year in Maine I almost came to blows with a surfer. I moved twice down the beach and each time he eventually surfed right where I was fishing. I yelled out to him to have some courtesy. This caused him to charge up onto the beach. Words were exchanged. I did cast a plug pretty close to him a couple of times after that.