WQ6X Leverages Stereo-CW for 2024 IARU HF Championship

Sitting on BART enroute to W7AYT's QTH, I was reflecting on the importance of using Stereo-CW
and in particular, ways to maximize its use when running pileups.  ([CLICK HERE] to read that.)  
While I have dual-OP'd the IARU HF Championship in recent years, having recently revamped the antenna configuration @W7AYT, the decision was made to run the IARU GiG as Single-OP (assisted) CW-only, affording the opportunity to utilize the Reverse Beacon Network (RBN) to evaluate and compare signal levels from the 8JK-Cobra array and the 3-el 10m Long John yagi (which works reasonably well as a "BuddiPole" on 30 thru 15 meters).  Running CW-only enabled making yet another investigation into the efficacy of running Stereo-CW.

The downside of this weekend came on Friday evening when the wireless keyboard was discovered to be non-operational.  I remembered there was a USB-cabled keyboard sitting forlornly on the shelf.  Plugging it in, I remembered why it got sidelined: the [SPACEBAR], FK4, FK6 "G" & "H" keys were non-functional, requiring those keys to be pressed on the laptop with the right hand, using the left-hand for the rest of the data entry.  While a trip to my Alameda office on Sunday brought in a replacement wireless keyboard, by then the IARU GiG had been over for nearly 8 hours.

As I mentioned in the 3830 Score submission, it seems that stations hear WQ6X (from W7AYT)
better than we hear them.  Numerous times I heard callers right at the noise floor, while it was
clear that WQ6X was reasonably strong on the other end.

While signals on the yagi were weaker than with the 8JK Cobras, the signal-to-noise (SNR) was dramatically superior.  Realizing this prompted the installation of a 2-position coax switch, switching the yagi between COAX-2 on the MFJ-993B auto tuner (for 10-meters) and the RX-Ant connector
on the Yaesu FT-2000 for other bands.  With considerably less background noise, picking out weak stations using the yagi on receive improved performance dramatically.

Based on RBN-reported signal levels, it would seem that running the 3-element 10m yagi on
20 & 15 meters transformed the yagi from a broadside array to more-or-less an end-fire pattern. 
The secret was to rotate the yagi for the strongest signal during Search and Pounce (S&P) operations.

DiD YOU work the 24-hour IARU HF Championship radiosport contest?

Is WQ6X in YOUR LoG?