three ufo's hovered watching my friends and I play street hockey for I don't know how long in 1971 or 72

When I was 9 years old, I was playing street hockey in the evening under the street lights with a group of friends.  It was a foggy summer night and the street lights had a halo surrounding them from the fog.  
For no particular reason that I could explain, I stopped and looked up.  Above us about 8 stories up were 3 round disc shaped ufo's, hovering watching us playing hockey.  My guess is they were about 5 to 6 foot in diameter they gave off a dull light and were surrounded by halos just like the street light.  
They had what looked like the letter X which covered most of the bottoms of their ships.  These X's were a light gray or a duller light.  When I looked up they sat there for about 10 secs. then one of them started to fly off slowly.  Then the other 2 followed. As they flew away they bounced like a rock skipping on water and with no sound down our street.
((
Witness indicates that the date above is approximate.  We have assigned an arbitrary date in 1971.  PD)
NUFORC Note:  Witness indicates that the date above is approximate.  PD)