Just upvote all your posts a little bit with upvote bots like minnowbooster or smartmarket. You will get more engagement on your posts.
Steembounty also works well or dpoll. Ask people on dpoll if they tried out the site and some will do.
Another thing that works great is sending people a memo to their wallet. If you are interested, i have a special tool that you can use to send mass memo's to people. If you don't overdo it they won't be annoyed by it. I can sent you the tool if you want.