I lean more toward brookfieldangler's tactics but that being said, I fish more rivers than lakes and I think that makes a difference.
My first presentation is slam it down hard and start popping. In rivers there is so much noise from rushiing water I'm convinced loud rapid pops helps. The fish also only have a few seconds to make a decision and the sooner they know the bait is there the better.
However, early in the season I have learned to slow it down and twitch/swim it and some times slam it down and do nothing works best. But once it gets hot like in late May/June (I'm in SC), usually they want it fast and hard.
BTW, in still calm lakes, I start out slap down and do nothing for a while and then twitches and swim slow. If that don't work I speed up till I find what they want...if I know for sure I am over bass like I'm seeing follows and refusals.
Ofcourse I prefer those times when it's a matter of JUST GET THE FLY ON THE WATER!
What is the best way to retrieve a surface bug? Let the fish tell you.
Good luck and hope this helps!
Here is a good LM I caught when it was 95F, water temp was above 80F and at around 1pm and using rapid hard pops on a hair bug...on a river with lots of O2 from mild shoals (that is key).