Missiles in Real thrust

Examining the rules ideas for FTIII in a Newtonian Universe, Missiles
had
better have a multi-turn capability or they will be useless.  Matching 
velocities with an opponent is difficult enough.  Having missiles that
 can maneuver or at least counter-act the firing ships own velocity is
 a minimum requirement to be worth the cost and Mass of the weapon.
  We'll have to examine other weapons such as Sand, Dumbfire missiles
 (thrusting mines) etc.
  Given the cost and Mass requirements of a Missile versus a Scatter
 Pack and then comparing their effective firepower, I don't think 
missiles are too much at all.
  Phil P.