I like super long drifts, in order to pull this off you need to leave a lot of line on the water to let the current take the fly where it will with no drag.
By practicing this I've managed to develop some rod skills, shaking line off the rod (I use a right/left motion, as if you're sewing seeds), mending constantly and leaving wiggled S shaped fly line in areas that I know the current is going to straighten it out.
Practice doing this and I know it will improve your drag free drift and give you a better understanding of what the current will do with your line.
Now to set the hook, lol, if you drift long like this don't lift the rod to set the hook, rather take the rod parallel to the water and turn your whole body to the bank opposite of your fly and take the rod back as far as you can to get all that slack line, and reel like h3LL