I tried the old vector based Mayday combat system on a gym floor years ago.  Used 1" per G thrust with 30 degree turn per agility rating.  Used different ship sizes and numbers.  Had a bit of an audience watching missiles flying around and ships getting destroyed.    
  The demo helped to get several new players into the game.   
  
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In the end, Murphy will rule
				
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In the end, Murphy will rule