Generally, if you are uncertain of which direction for the breakout, sidelining and using bracket orders above and below the pennant's first bar's high and low can take you into the trade when it decides to break. One key is placing the trigger price at the appropriate offset. One caveat is to watch the horizontal lines of the lateral's S/R as price penetrates it but then closes within the first bar's range. There's a BO and there's a Failed BO, both are possibilities weighted to your bias of perception. The bias is revealed during debriefing.