A Pocket is a /price pattern and occurs when:
The price goes up compared to yesterdays close.
The today is higher than the maximum down of the past 10 days.
Effective analyses the intraday on the minute level to determine what small and large players are doing in terms of accumulation and distribution. There is a great book on this subject by W Pascal.
NV is flat. OBV is high. Positive which is on up days, which often represents the general public, is high.
By no means a recommendation..