When pulling back the plunger on the Colony Table, go only as far back
as the first two marks of the meter in order to catch the ball on the 
back of the barricade. If the barricade's light is still flashing (and
it should be, if the ball doesn't pass it), all of the "OUTPOST" letters
will be filled and start the sequence for a three-ball Multiball; just
send a ball into the Tunnel, then the Cave, and the Tunnel again. Also,
if you can time just right with the Right Flipper, you can bounce the 
ball off the corner of the barricade to get the ball bouncing almost 
continually between two of the Jet bumpers. 

This will effectively randomize the Bonus Event, upgrade to Super Jets,
and score a lot of points for the Drain Bonus.