Hello Aussie123,
The flame spot I got from Keith about 12km East of Hoskines was in the 150-200m depth and I looked about for about 40 minutes and they weren't home that day - that's fishing.
I did a blind drift purely because we were there and maybe there was something about and not showing - but it was quiet.
The attempt was not my usual 6-10 hour effort as mate was more than happy with the shallower reef results so it was a token effort.
If I had stumbled over a show I would have worked at it a lot more but . . .
As for ground it was flat everywhere I went - no reef or small peaks to look about.
I didn't do any grid type scanning though.