I am using a guide I bought here on BHW with good results considering I paid $35 for the guide. Conversion rate of about 5% so far (early days)
The thing is, Black Hat tactics work best if you use them to enhance proper workflows/strategy not just spamming and praying.
On IG I am using Mother/Child to get people to follow me. Then after they follow me, and I follow back, I have access to the DMs where I convert the leads.
Am selling a service for USD250 a pop and have no problems finding interested parties. They come to my office and pay cash, I am targeting locals.
What I do is plan the campaign first, from what the target pages where I intend to scrape from are like, what the followers are like, the type of comments they respond to are like etc down to the last detail.
I am talking about using Avatars that match the people in the country where the page is based, and changing the names and language when commenting to suit the target country.
In some cases I tailor the comments/DMs to suit the content in the posts where I scraped the users from.
You can't DM someone from Brazil with a message in English, and an avatar and name from Eastern Europe. Match everything as much as possible.
Also, your value proposition. What are you selling? If you are pushing junk products then it adds to your problems. Use IG DMs and Mother/Child properly and you will sell anything.
The idea is to use Black Hat methods to enhance proper Marketing procedures, and not make them the center of things.