Jerk the rock, when drawing the cue ball back the cue ball noticably accelerates a second or third time after it initially starts coming back.
Tips or Techniques appreciated.
There is no such thing as a double acceleration or triple acceleration. There is an acceleration, then a constant velocity, and then a deceleration. When you hit a smooth draw shot, the cueball will accelerate off the cue tip. the cue ball is spinning backwards. There is a magical point along its path where that acceleration is 0, and the cue ball has a constant velocity. When the cueball hits the object ball, there is a massive deceleration. That's when the rotational force of the draw kicks in. If you've ever seen the cueball "spinning its wheels", you've seen whitey stall for a quick second, then yank back? There is no acceleration going on. In fact, in any draw shot, you are actually fighting constant deceleration, as the friction from the cloth is always fighting the reverse action.
So, to answer your question, you can't hit a draw shot that accelerates. It will constantly be decelerating the second it leaves the cue. Now, what you are probably noticing is table slide. Imagine spinning the tires in a 1000hp Bugati. The tires can accelerate faster than the tires can grab the pavement. Your car will move faster when the tires are spinning slower, because you don't have any wasted rotational force. On new Simonis cloth, you can play some disgusting draw shots - big sweeping hooks, massive C curve draws. It's because the cueball is spinning so fast, but it's not grabbing the cloth. Where you see the "acceleration" you're referring to is when the cueball has started to grab the cloth. As it slows down, it has better friction between the ball and cloth. The cueball is constantly slowing down, but the rotational force is now more effective, as the cueball is rolling on the cloth instead of spinning and skidding.