When a stock pulls bakc from highs or lows by either 25% or 75% I also add a volume filter so that I see this action on relative high volume.
We mainly trade stocks so that is what I am basing my post on, but I have applied the pivots to various eminis and found them to be useful.
Sorry to be a pest, but are opening gaps and the previous day's close factors in calculating these levels or do you use only the morning "pivot" highs and lows for whatever it is you're trading?