Make content that leftists will pay money for. Get them to be your paypigs. Assume the persona of an SJW. Apply your best impersonation of Counter-Signaling style memes. Design topics that let you delve into important events. Cover them almost like you would if you were making it for a Zig Forumsack. Then, clumsily try to "debunk" it by using leftisms.
This part is crucial: Always employ unambiguous language and what SJWs essentially say.
You want your SJW ramblings to be case examples of what SJWs say, minus all of the marxist drivel. You want Zig Forums to not be able to tell the difference between that and an actual SJW. If you're excellent at composing thoughts, you can forget that rule and instead alternate like so:
< [heinous infuriating statement with zero ambiguity] - you want these to stand out so you can shock bluepilled people and make them recoil in disgust
You will make redpilled content by selling the redpills better than selling your SJWisms. You will make SJWs have weaker arguments by setting up your followers for failure. By sending them into battle with poorly thought out arguments, you help even the densest "alt-right" plebbitor win a debate over them.
The bluepilled that were disgusted will then take a contrary position from yours and seek answers elsewhere on those topics. Redpilling normalfags is not as simple as telling them, "Hitler was right," and then explaining why with lots of sources. Redpilling normalfags requires them to absolutely hate leftists in all incarnations, e.g. SJWs. Even though they will still be programmed to hate those ebil internet nazis there will come a point very soon where they realize they tolerate those evil nazis more than SJWs. Then that's where you win.
Protip: this is why the mainstream media does everything in their power to pretend SJWs don't exist. SJWs are the most convenient enemies because they make normalfags not want to be them.
A combination of VPN usage, separation of your real identity and your fake one, and good management of both. SJWs aren't good at sniffing out imposters. Indeed, they take advantage of each other and a good portion are basically involved in SJW activities because it means money.
You won't get caught if you learn how to blend right in. Disclaimer: none of this will work if you don't have a sense of sockpuppetry, charisma, and the ability to mimic rhetoric. I'm not the first to think of this. Plenty have done it before, and so far the only ones who get caught are the ones who had too much of a laugh and basically admitted who they were on Zig Forums. If you can't stifle your own giggles and want Zig Forums-sempai to notice you, you already lost. You and Zig Forums are better off with Zig Forums thinking you're an especially heinous SJW who deserves the rope.
You're probably thinking this:
Not at all. SJWs do this, but also so do "oldschool leftists," who are rivals to one another.
If even a few are, that wouldn't surprise me. If there are more than a few, that's a testament to Zig Forums sockpuppetry.