I am finally understanding screeners a bit more. I think it is important to have several screeners for different reasons. It is good to have screeners with different filters as you look for different patterns. You should check your screeners often and be watchful of what shows up on your screener as it only shows you past information. After something comes up on your screener you must do your due diligence and look at the info on several other sites regarding that ticker. IF the information, news, volume, pattern and price fits your parameters then you might add it to your Watch List for action that day or maybe in the near future.
With Watch Lists I think it is important to have several different ones. You might have a few for industries that you are interested in and then also have Watch Lists for tickers that pop up on your screeners that fit your parameters on a daily basis.
If you have a Watch List for an industry that you are interested in and you keep the number of tickers in there low you can see the patterns of those tickers and what can make them spike. This takes time but I think it will be very valuable for future trades. Because 95% of penny stocks end up at Zero it is important to learn when to jump in an out to get a small slice of the pie.
Two months ago I had absolutely no idea what a screener was. I opened up screener pages and was totally lost as it is a whole new language. Learning about these is important so that you have tickers that you can watch for the patterns that fit you.
Tim's vids and Investopedia are extremely valuable for learning this. I have found that it works good for me to watch Tim's vids and then to read about the same topic in Investopedia then watch some of the same vids over. Everyone's learning pattern is different so find what works for you.