As the law states the lake belongs to the people not the land owners. You can use the water up to the high water mark if you so desire.(Even if it is on the land itself). This includes the docks that people put out since it is in/on public waters. So basicly the land owner can not tell you to move.
It is a courtesy of those using the lake not to push the issue about going to the high water mark. I think the land owner needs to read the laws and realize they have no right to tell someone to move out of their "view". That person was very rude and if they ran into me they would be sorry.

I wouldn't move and probably I would have drove right up to there beach and planted my anchor.Just because they own the property doesn't mean they own the view too.

Don't get me wrong I am not a mean person and usually am very courteous to others but if I got approached like that I would not be so nice back. I too like to look at the views around the lake either from land or on the water. Sometimes you have to look through things (others) to see the view. It is part of life on the lake.