Well master blasters and leaf blowers are without a doubt the safest way to dry. Swirls are inflicted to ways. Washing and drying. I think the chances are 30% washing 70% drying. Blow drying eliminates that 70%.
Now if you are going to use a towel. I have basically found a perfect method. I did this before I could afford a master blaster.
PLEASE TRY THIS!
Waffle weaves are awesome, but because of the short nappe, you have a chance of dragging dirt across the hood (say you are outside and a gust of wind blows some dirt onto the car) rather than lifting it into the towel.
I got one of these
Big 530 Towels to dry with. This will lift dirt into the deeper nappe.
To start I soak the towel in warm water, and wring it out so it is damp.
Then I take a bottle of ONR/ONRWW/QD and spray the panel first as a drying aid. This will add lubricity, and you will be QDing as you dry!
Then a systematically wipe down the car until it is dry. I try to use the blotting method as much as possible!
Try it out, you will be hooked.