To answer some of the questions and a bit of background all my gear is second hand as stated this is my second season bought the harness late last year it is a T-6 and I definitely did not use it correctly for a couple of sessions initially. Before I started this year I found this clip and followed this to use it properly
much better after that

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The rest of the gear I was on that day Tabou 125L (about 2012), 6m Gasstra Remedy (I think that is what it is called), Neil Pryde X3 180-230 boom, 31cm JP Freeride fin I am using 28" harness lines in retrospect these may have been about an inch to inch and half too far forward.
I am about 5ft 8" generally somewhere between 77-80 Kg. Probably closer to 80 being just after Christmas

. I was on the starboard side going back in from the sandbar at Melville. Definitely more comfortable going the other way at this point.
Didn't break anything else but was a bit hazy afterwards I think the harness belt was still pretty tight.