Bots like @booster, @randowahle, @minnowbooster can be used to get a steady ROI if used properly.

https://steemitimages.com/0x0/http://www.zarca.com/online-survey-images/Online-Surveys-Product/Data-Analysis-and-Reporting.jpg

In this article we will talk about @booster a bid bot upvoting system that runs every 2.4 hours roughly.
@booster is one of the smart upvoting bots available in the steemit world if you use it smartly along with its frontrunner guild.
People tend of get frustrated when they lose money on it. Most people lose money since they are bidding with too many other people and the total investment during that 2.4 hour time frame reaches close to 70.
You can definitely get a good ROI if you know the best time to bid on it.

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The chart here shows the amount transferred to Booster per hour.

![](https://steemitimages.com/DQmQn7rabEXfiyjDTUcBa14UAzCgfq8svVLkt1Vo1H1vtRm/image.png)

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Here is a pivot chart of the same data 
![](https://steemitimages.com/DQmQLDLBWEjr6n91eYetx5co8DMnSC66eGXin7QwnwZZCB6/image.png)

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The blocks in green is your best chance of getting a good ROI.

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The chart only takes into account the data for last 2 weeks .
</strong>

The hours are the server time on the STEEMSQL.COM which is a a public SQL server database with all Steemit blockchain data hosted by @arcange.  Its 6 hours ahead of the EST time.

NOTE : The data does not take into account the refunds done by booster when the bids are in too late or its not able to upvote the posts.

Another site that can be used is http://steem.cool/booster/. This is a @booster ROI (Return On Investment) Tool By @blueorgy.

Work hardly by working smartly ;)