AnyBoard said..
I have the new PRv2 and even in the 3m i still perform a double pull. It has no negative once you know how to do it . I don't think its worth having really short lines considering what you give up, give me the PRv1 lines any day and they pack heaps better. I noticed even Dimitry in Mauritius is doing the double pull on all brands. It creates a very tight gathering with the last pull being more powerful and doesn't stress the shoulders at their extremities.
In my opinion you gain low end maybe better upwind. But I rather go a little bit larger pw with good line length or better board. I will never buy a parawing again that has long lines. 2 pull is deal breaker for me. No afterburner for me in larger sizes . Hope smaller sizes has ok/good length. Hope Ozone surprises me.