Re: doing the double haul
The closer you can make the haul to the stop, the tighter your loop should be (depending, of course, that the other key eliments of your cast are good such as tip path and such)
Too early with the haul and you can easily get a tailing loop by creating a concave rod tip path.
I find pantomime really helps get the timing down. I think that is an old Mel Kreiger tip.