to avoid water spots i dry it differently to jon, or anyone else i have ever spoke too for that matter
i wash and then rinse, the roof, windscreen and rear window, then dry them
then wash the A, B, C pillars, side windows, wingmirrors, then rinse and dry these
then wash the boot lid , spoiler and bonnet, then rinse and dry
then do each side of the car in turn, that is front and rear wings, and doors, rinse and dry etc.
then i do the rear panel (number palte, lights etc) and the rear bumper valence..........rinse dry etc
then again, front grill bumper valence wash rinse dry etc
on all the above i make sure i over lap slightly when both washing and rinsing and the waffle towel still doesn't need, nor is capable of being, wrung out
then i move on to the wheels and underneath of the running boards and where the body kit folds inside the wheel arch slightly (i.e. the coloured bit you can see, not in all the cracks as like jon says, just get your fingers in and rake it out.
i have never spoke to anyone who drys the car then reapplys suds and water in a different area before rinsing and drying to wash rinse and dry again
in the summer it is THE easiest way to prevent spotting, and if your in the direct sunlight then just do smaller sections, i.e. one wing, or door, or the bonnet, or bootlid, or just the roof, or set of windows etc in one stage
i.e. just wash the roof and roof only, then rinse and dry, then the windscreen wash rinse dry, then the rear screen wash rinse dry, then the front drivers wing wash rinse dry, then the drivers door wash rinse dry etc etc
always work top to bottom, and keep an eye on where your spray is going (re dry any bits that go onto already washed/dryed paint) and where the water runs out after drying (near all lights front and rear, around roof, bootlid drains etc, rear popout windows etc
then when i'm all done that i get an old cloth and dry out all the panel gaps / door / boot / bonnet shuts etc and give underneth of the front side of the bonnet a wipe etc as the mudd and shite that gets splattered under there and around the top of the rad is horrendous at this time of year
i also open pop out windows and dry under them
open boot and wipe around where the outside edge of the seal lies, also make sure to wipe around the sealing surface of the actual boot lid itself, and watch for water running down the left and right hand edge of hte boot lid and dripping/running down your rear wings
dry out around petrol filler and keep back of cap and rubber grommit clean
then maybe give the inlet manifold and rocker cover a wipe over, as with most of the bodywork under the bonnet, clean over most of the reseviors and plastic covers on the like of the AFM and the secondary realy box etc, dry out hte battery tray etc (always water in there

)
i'm sure theres more too but i just can't think thats usually a normal weekly wash in the summer, normally it will get that every week in the summer without fail, in the winter it may get one that thorough maybe every three or four weeks and the rest of the time its just on bodywork and inside the arches and spraying the underneath to keep the salt and crap out, its too much work for every week for how dirty the car gets in teh winter, especially with me having less time to do it due to weather light time etc
if you need to know anything else Dave then just give me a yell