Had a play with the settings on my 12m CAT. My thoughts
Bar Pressure- Kite has 3 settings. +\-
Low bar pressure- kite turns faster. Good for beach breaks. Fast snappy turns. Low wind days
Mid bar pressure- my normal setting for powered up riding. Turns well. Good for sending and control
High Bar Pressure- kite turns slower. Good for windy days and big boosts. Good control when your well powered up
Knots under float - performance will vary depending on the back lines and will generally range from
Knot further away from bar(shorter rear lines) & low bar pressure kite will be stalling(wind tips pulled in to excess) to knot closest to bar(longer rear lines) & high bar pressure(best for over powered)
Good thing is that the adjustments are so easy and can be made depending on wind conditions and how you want to kite(boost large

)