Well, I don't know about that. Certainly resteeming does nothing for you. Upvoting and curation rewards in general is not so lucrative unless you maybe program a bot to seek out the good curation opportunities (which is hard to figure out... unless possibly you look at the bottracker for opportunities).

In terms of author rewards, STEEM POWER just helps you with self-vote, so you do get some value there. Ah! And you can sell your vote with services like minnowbooster and smartsteem, which seems to be pretty lucrative. Otherwise, it seems feasible just to keep making good posts and try to get exposure to gain more STEEM.

In other words, I don't really have experience with what you are asking, but I have a few ideas.