Very simple! Can make you MILLIONS with very little risk.
Look at the markets once a month or when ever you want.

1. Make a good watchlist of 100 to 200 etfs. Or ever how many you want?

2. Rank them by ROC for 1 month, 3 months and 6 months or maybe even 52 week highs etc.
You can come up with you own idea to soot you!

3. Put $500 in the top 10 each month. Or $1,000 in the top 5 etc.
Best to be sure they are in different industries etc.

4. Look at them each month and switch out of any that fall back a certain amount and and new ones that move up to the top of your list etc.

Doing something like this you should be able to make? Maybe 10% a month?

Once you have your plan and have tested it good and understand what you want and need to do.
You can use technical and pullbacks etc. To make 20%-30% per month?

Also when possible use the leveraged ETFs! The 2 and 3 times ETFs.
They can really bump the profits up.

Can also use options to make around 6 times more etc.

Your choice. Just DO IT!

The main risk in something like this, is NOT doing it! LOL!

Have fun with little work.