You're not a trained pursuit driver (and they get it wrong a good chunk of the time) so why the fuck are you playing at one?
Further, why do you think that if it's safe to "whipsaw" then anyone else is going to think anything other than "uh oh, dickhead in the mirrors" and ignore you?
If you can't make progress without intimidating (or attempting to intimidate) other drivers, then perhaps you should reconsider your own ability as a driver. You don't have a god-given right to force anyone else to break the law (or speed limit) for your convenience.
Know your car, your road surface, and your abilities.
Then reduce your assessment of your abilities by half, to give yourself some contingency.
Of course, the other thing you should consider is that every car you fuck about with like this is unmarked plod, who will delay you a whole lot more if they decide to pull you over.
Parting shot: I don't care how far you had to drive, because that's no defence for driving like a tit, which is what you were moaning about (lane hoggers) and what you did (aggressive, dangerous arsehole). Drive properly, then at least the average goes up, if only by a tiny amount.