In respect of tech analysis being useful in determining whether a retrace/pullback may turn into an absolute reversal, what may be useful is the following
1. How many time frames does the trend extend on?
2. What is the character of the trend in terms of it's pullback's are they historically deep or shallow?
3. What do you think was the strength of the support / resistance that gave rise to the puullback, what happened when/if price was last at this level?
4. Are there any technical conditions at the top/bottom of the trend prior to the pullback that may suggest a reversal or at least a deeper pullback, like oscillator extremes or divergence for eg?
5. Where is the broken support/resistance that may act as potential resistance/support now in a pullback, and is there any confluence there with fibs etc..?
6. Are there any technical conditions like hidden (reverse) divergence that suggest a re-entry to the trend at such a pre-identifies sbr/rbs area might be a good play?
7. What is price's relationship to to intraday/intraweek/intramonth pip range averages at the point of pullback?
and finally
8. Are there any specific fundamental factors driving the trend?
G/L