Manually I reply tweets, consistently following trends. Currently I see 15 - 20 followers a day.
My goal is to send out those tweets so they can be seen by people who come to make comments.
I think it's better to make tweets count than use retweets as tweets. If I have 4000 tweets in 10 days through comments it's way better than 4000 retweets that counts as 4000 tweets.
What's your thought?
Your approach is good and genuine. It is better to build real people network using real methods than a fake or casual approach to build a network. Keep posting your updates.