Bright silent lights above lake

We were out boating on the Lake after dark and to the North appeared a bright, silent light at approx. 3000 feet high. We didn't notice it arrive but while we watched another joined it slowly from the west. They hung together in the sky about 200 feet apart, for about a minute- then the one on the right zoomed off to the east at about 100mph- it hesitated after a short while and then dissapeared into the horizon. The other then moved off to the west again at a similar rate. All this took place in total silence. A helicopter or plane would have made some noise. There were no roads on the hillside behind the objects so it couldn't have been reflections from car headlights. The movement away of the objects seemed to coincide with how long they were stared at. ie when we looked at them they moved and they rested when we looked elsewhere. The best way to describe the objects was like two bright light bulbs in a pitch black room. These were definitely NOT stars. I would like to add that before this I was a sceptic. I am a fairly sane university graduate aged 27 (22 at the time) and no, we had not been drinking! I give this report after watching a UFO TV program that jogged my memory- then I looked at some website where someone described almost the same thing in Seskatchewan, Canada a month later. The image is an illustration, as clear as I remember it. Why can't we be clutching a camera at times like this?!