I own 2 of the 160's. Using a Narda on one and running 45W. I have a Tsunami on the other running at 76W. Squonking depends on your build and how hot you're running it. 2mm
coils would entail squonking almost every hit. Both of my atties are built dual coil and have deep
juice wells. I have 3mm coils in the tsunami and I give a long squonk on that and hold it to let the wicking get saturated. You don't need to keep squeezing and letting go. Just squonk and hold it, then let go. The Narda has dual 2.5mm coils and I squonk about every 3rd or 4 draw and don't have to hold it long at all. So every atty and build are going to be different. Best to take the top off the atty and squonk and watch it to see how long it takes to saturate your particular wicks. Once you get a feel for it, it just becomes second nature.