Thanks Phil for your response, much appreciated.Practice
Personally i hadn't shot with CAF let alone CAF-TR very much if really ever prior to getting the EM1.2, i have literally taken maybe 50k+ sporting type images now with CAF-TR and the first big thing was don't sweat the ones that are not in focus, you can see reviewing a set shot at 18fps that it can lose focus but can also get it back fast as well.
For sporting images that I have used it for, Tennis, Triathlon, Running, surfing, Single focus point works for me and i find if i'm also physically tracking the action that the CAF-TR will usually hold onto my target as if drifts away from the initial point.
Back Button Focus is very much your friend and this next bit was likely my best lesson and it wasn't learnt on this camera or even in the Oly ecosystem......... I was reading a a number of well written post for Canon 1dxmk x cameras that were talking about even their legendary focus tracking loosing it and the recommendations paraphrased said...
Use back button focus and be constantly prepared to lift your thumb, recenter onto your target and press the button again to acquire focus again..
This stuck and i'm gradually training myself to watch for the red square indicating lost track and to stop CAF and recenter and refocus.
This is different to BIF techniques generally spoken about which are usually saying use multiple focus points.
Most of these surf shoots i'd moved the focus square up on from center due to how i was initially framing the surfer.
CAF-Lock was set at 0, gradually getting a feel for this as well but can only suggest you try it for each circumstance.
I know i haven't thrown a set of settings at you and said this will work, sorry. My initial throw away comment of practice is in many ways the truth, the sport pro togs using high end Canon/nikon gear have likely used it for years have immense experience in shooting with CAF and Tracking far worse than the EM1.2 provides even if not up to the current generation in ability yet they just instinctively know and the newer gear just makes them look like gods but in the end it's experience and practice really making the difference
I was using CAF for the surf shots on Low frame rate.
I will have a play around with CAF-TR, I seem to remember you wrote another post about it in this forum, will have a look.
I did setup back button focus but reset it before really giving it a go. Again, will take another look.