Hey SirAlanClive. Or anyone
Get some consistency in your laps and always save your best lap of the session. Then save one of the top 10 competitors replays, and in the replay theatre Data Logger load up that top 10 lap. Then Load up your own lap.
It will default to comparing data vs track distance. Look at that White trace at the top. Anywhere your speed (dark white) is below the fast lap (bright white) you have room to improve. The area between the lines is literally "time". You can see where you can improve e.g. by braking later, more speed etc.
You can also see what it takes to have a good technique:
Brake hard only to get speed down so you can turn in. In the Brakes trace this is the big lumps (80-100% brakes) Downshift early at full power then off the throttle to maximise engine braking and get the car turning (weight over front wheels, back wheels slipping, not sliding!) Let go the throttle completely and steer. No touchie the throttle until at/past the apex.
Turn in and only then "touch" the brakes to nudge the car down to the apex, you can see the nose drop slightly. In the Brakes trace, you can see small lumps (10% brakes), this is what is happening.
Never touch the grass, never run up high on the red and white.
Full power on exit to try (try try!) maximise oversteer.
Repeat the analysis and drive, analysis and drive. I have got down to high 47's, it's all about eliminating the gaps between the speed traces. Like F1 teams, 2 drivers comparing waveforms and see how and where to try and go faster.
The fast guys have fantastic linear speed traces that look almost like sawtooth waveforms
Braking and then slowing to the apex, the V of the waveform where they speed up off the apex to the next braking point, the ^ of the waveform. To generate that waveform it's all about the perfect line and perfect timing.
I am now 224th, and every time I go faster it's only by 1 2 or 3 tenths... every tiny scrap of speed difference counts, every carlength counts. I may never go faster but I won't stop trying!
BIG THANKS to J. Clarkson!!!