What to look for regarding the issue of data lag:

If the one-sided market keeps rising, the lag is severe.

The main force will not react to you in time to enter or exit.

If it is a bottom oscillation for several weeks to absorb positions, then there is no lag. Once the absorption is sufficient, you can heavily invest in long positions.

There is no perfect tool or trading method; it still depends on how you apply it to assist you in analysis or trading.

The longer the absorption time, the lower the main force's cost, which indicates that the subsequent market will last a long time (refer to the trend from April 10 to May 30).

If it is a one-sided upward market, there are two possibilities: the first is super undervaluation after a black swan event, and the second is that the main force quickly rises to clear positions above.