I've been messing around with the aimian.ini file some more, and discovered something fonny http://www.soccergaming.com/ubb/biggrin.gif

Change this line in the file
"BALL_AIR_RESISTANCE_XZ = 0.0125"
to this
"BALL_AIR_RESISTANCE_XZ = 0.055 "

And voila, balloon mode http://www.soccergaming.com/ubb/smile.gif