quick read, how? - tips series

One reader asked like this,

I'm studying speed reading for some months now, but I wasn't using any pacers, since the course I was taking see them as not only unnecessary, but something to be avoided. The issue is that I'm feeling my eyes all over the place and I'm considering giving pacers a chance.

When you use your pointer/finger as a pacer, what happens to your eyes? Do you still read chunking the words? Do your eyes smoothly flow across the lines (doing smooth jumps) or they do strong jumps from one side to the other of the lines?

What's the answer?