September 1, south part of Port Maitland on lake Erie, my boat was trolling westbound, this "Kingfisher" (known as "pirate boat" in the following) was trolling northbound towards Port Maitland.
My boat was using Terrova Autopilot so the course was pretty straight the speed steady. I need to point out that not until this pirate boat was like 100 meters away did I notice my boat was on the starboard bow side of it, which meant to me the crossing situation in the picture would probably happen. The pirate boat did not make any change to its course before both boats became about 50 meters apart. Never had such a close encounter with other boats on big lakes before, as I always took precautions and actions and all other boaters did the same too.
I steered my boat towards right side a bit and tuned up the trolling speed in an attempt to avoid the party but what appalled me was the pirate boat steered a little to its left instead of right side! Unbelievably the positions of both boats ended up exactly like it is in the picture except that the pirate boat did not steer to the right and straight passed behind my stern just about 30 feet away. My lead core got entangled was being pulled hard so I had to steer the trolling motor to follow the pirate boat and yelled to them to stop the boat, the two pirates on the back side of the boat was reluctantly to get started to solve the problem. The pirate boat was not even stopped completely! Trolling all by myself at the time, I was not even having time to remind myself of taking a video or photo. Just went back near to the pirates and took a picture after I lost my lure on the leadcore. The pirates took out cellphones as well after they saw me taking photos, of course they had my finger in their pics. Need to think about what I should do to prevent this from happening again in future (hope not) and what to do afterwards.