The land owners who believe they own the water infront of thier house out to their swim raft 75 yards off shore. I have run into that numerous times. Ive actually been fishing along the shore only to have a person come OUT of thier house to inform me that I was inside their swim raft and therefore tresspassing.
Or another time I was going through a narrow channel type area and a homeowner put thier raft right on the far drop off in the channel. When I tried to stay inside the channel and I passed inside thier rafft, they informed me I should be passing to the outside of "thier" beach.
I think the raft permits should not cost anything. It should be done for safty issues like John said above. People should not be allowed to just place them anyplace without reguard for anyone else.