It just depends. I had a person to catch a slab out from underneath my boat and I was tickled to death. In another specific case I had someone fish my marker that I was still fishing and ruined the fishing hole by jacking around directly on top of the structure that was in 6 FOW. The pole tips were within 12 inches at times. Same knucklehead cut me off at the ramp after I had waited for 2 boats to load in front of me.

It's fishing. If a person can find a fish, he will have company sooner or later but it ain't gonna be me.