I spent all day bobber fishing on a shallow rock reef on Mille Lacs yesterday. I was on a rock reef that probably extends at least a good half mile or so. The closest boat from me was probably a solid 1/4 mile from me until a guy in a nice Lund boat decides to lindy rig by me, which is fine with me. Moments later I catch a 26 inch walleye. The guy in the Lund then decides to try bobber fishing next to me, which is fine with me. Well, his anchor didn’t exactly hold. The one piece of equipment that I had better than this guy was an anchor. I was fishing out of my 16 ft. Lund Rebel with a 40 hp Merc, not exactly your ideal boat to fish big water, but it never keeps me off. There was also 3 foot rollers and windy as heck! 
So, all this guy caught while lindy rigging was a snag, and his anchor wouldn’t hold to try bobber fishing, he decides to drive around me in a circle for the next hour without even fishing. At times he was only 30 feet from my bobber! I’m thinking to myself, “is this really happening?” The only thing that had been keeping myself from saying anything was the weather was downright miserable out there. I was just lucky my anchor was holding. So, after what was an actual hour of circles around my boat, I had to ask this guy what he was doing. I asked him why he was driving around my boat and told him; “I have only caught one walleye in the last hour. I am not on a secret spot here. This is a large rock reef and all I am doing is fishing the top of the reef. I am not on a secret piece of structure off of this reef.”
His response was that he was trying to figure out his GPS. Are you kidding me? 
I don’t know how someone could treat another angler/boat on the water like this. It should be common sense to respect one another on the water. I feel bad when I am fishing 50 yards away from someone, but I would never drive around in a circle around another boat for an hour like this guy did. The funny thing was that this guy didn’t understand why I would even be annoyed or frustrated by his actions. I don’t understand why he couldn’t try to figure out his GPS elsewhere instead of around me. Huge reef with plenty of room to figure it out away from any other boats. I would have been fine if he would have anchored right next to me and bobbered, things like that happen all the time on Mille Lacs. I never do it to other people, but I have been fishing out there a long time to expect it. But driving your boat around me for around an hour is out of line!
On a positive note the fishing was awesome. 
The wind and rain blew almost everyone off the lake by 1pm. The fishing really turned on at 3pm. Fished 8am-9pm.