Hype mode of new shares

Sub-new stocks are staged every year, and the increase is huge. If you can take advantage of one sub-new stock, you don't need to do the rest.
Ask a few questions:
After each board session, when is the right time to engage?
How many open boards are standard?
After the board is opened, it may fall. At this time, when will it intervene? After going flat, it started to rise. What is the average rise?
How many months can the time point increase each year? What signal from the outside world can confirm that the new shares have overheated and can gradually stop profit?