Speed Running Help: How to do the pulls?

[Cerith]

Hey guys, so I keep seeing people spamming for "speed runs" for PR/AK/WP(especially the popular new WP Speed runs I keep seeing advertised) and I'm just curious if there's any info/guide out there as to how one should handle the pulls. How many packs do I pull? Where to I skip? etc.. These questions don't have the most intuitive answers which is perfectly fine, but I'd rather not waste a groups time trying to figure it out on my own, which would be fine if I was a dps or healer, but as the tank I'm the one who has to do all of the unorthodox pulling/work.
So, if anyone could break down the nuances of how to do the pulls in a given instance, point me to guides/videos or just any info or perspective, I would really appreciate it.

It's a lot to ask out of you guys I know, but I feel that there are probably many tanks in my position who just let those LF1M tank PRSR/AK go by because they don't know how to actually do the pulls.

Thanks guys.