Just remember that it works both ways. I have been fishing that spot from my boat when someone will beach theirs and start casting where I am fishing. I consider that to be the same as someone pulling up and anchoring on top of me. I always respect shorebound anglers because they are limited to the water that they can reach. However, since these people choose to beach their boat instead of fishing out of it, they should give respect to the fisher that was there first. I do not mind sharing a spot as long as all involved show a little courtesy and common sense.