beer drinker, (ha! bloody aussie
) i think you are a tad wrong with some of the stuff you said. this is how i understand it:
-springs/tower pos/arm position all play a part.
HIGHER ON THE TOWER (further out)
places the shock at a greater angle. this means that a greater force is needed to be applied through the arm (via sideways movement and force) for the shock to react.
this makes the car "slide" more. not necessarily "slide" but the time it takes for the arm to move (ie make the rear end slide) is longer.
WHAT EFFECT DOES THIS CREATE?:
-basically on a slippery track the shocks high on the tower measn the car will slide around the corner more before gripping. this is good for a tight twisty track but not good for a open flowing slippery track.
-this setting also creates the feeling that the car is more "agressive" and "agile" ie it feels like it reacts to your steering inputs quicker.
REAR SHOCKS LAYED DOWN?
basically oposite effect. the car feels more progressive. ie small steering inputs won't create a "jerky" "responsive" feel as it did witht he shocks high up. you may feel like you have better grip,b ut the car will also be slower in entering and exiting the corners, but will not slide as much.
INNER HOLE ON THE ARM/OUTER HOLE?
IT IS THE SAME EFFECT AS LOWERING OR ANGLING THE SHOCKS. but i think from memory, the arm position has a greater effect. ie one hole up or down on the arm means like 3 holes difference on the tower.
the best way to know is to have the right set of tires on your car for your track.
1)put the shocks at the most layed down position
2) then at the highest most angled position and see the difference for yourself. it is very specific to your track/conditions/grip and tyres.