Obviously still missing something here...
Westhawk - if you say that less flap = higher approach speed, surely that doesn't square with your argument that using less flap in gusty/ x-wind conditions helps with the difference between app speed and touchdown spd (i.e. reduces it, if I understand your post?)
Tankengine - your theory I understand except that for the aircraft I fly, the gain in approach speed is in the order of around 5kts, which makes next to no difference to crab angles in my view (about 3 degrees witha 25kt component between 65 and 75 kts).
I'm still concluding that other than increasing app spd by a margin to allow for gustiness, small singles can be flown with full flap as normal, whatever the wind conditions are.