Large object moving from one horizon to the next in 8 seconds, with elongated blinks.

I was with about 8 people standing on the Gimli Beach.  I saw a large light coming from the horizon on my right.   The light was moving so fast the blinks were elongated.  This blinking occurred about 5-6 times between one horizon to the next in about 8 seconds.  
I'm reporting this now because I have never heard any report of elongated blinks.  When I look at a plane at night it seems to be small and move much slower as it blinks.  This was like a much larger version of this moving so fast the "blinks" would stretch and then shrink.  It even went over a low thin cloud mass and I saw the blinking right through the clouds. 
I asked if anyone else had "seen that" and one of the ladies said "I did".  She nodded her head when I explained what I saw.  
I later found out that many UFO sightings were being seen during that time of the year at that location.