HI there,
There is no standard way to invest in the Top 20 - each individual will have their own strategy. Remember that the Top 20 is based on an algorithm only which analyzes the company's growth, value and risk. However, we always recommend that investors due their due diligence on any stock they buy. In other others, one should never buy blindly.
We believe in investing for the long term, however, what you describe is but one way to tackle the Top 20 - keep in mind, this would require considerable capital and incur higher trading fees as you are in and out every week and in multiple positions. If you are dealing with small capital - the fees would eat up much of the returns you'd realize.
All the information we provide can be used as the basis for doing your due diligence. For example, I am always checking the Top 20 for new investment ideas. If there is one that matches what I am looking for, then I'll do further investigation to see if it something that fits my investment objective. Since everyone has their own risk profile and investment goals, they are likely to use the Top 20, or any of our other features slightly differently.
I would caution against trading heavily however - as mentioned - the fees could be significant. The only zero-fee trading platform that exists currently is the new Wealthsimple Trade and I am not familiar to know if this platform can easily handle such a strategy.
Mat