So I ended up not doing the Investigator after I had a chat with the Parks ranger and she was not going to let on about the water situation in the park tanks and said the only way I could do the trail would be with arranging my own water, which I couldn’t do as I was flying in. I thought she could have been a little bit more helpful but I suppose she had her reasons.
I did a chunk of Walk the Yorke instead and it was wonderful, I walked from Edithburgh to Hardwicke Bay, 250 kms. There was a public bus from Adelaide to both ends. The beach walking was great and there was very little tedious road walking. I didn’t get the impression many people do whole chunks like this but there’s a fair bit of day walking happening. I found water at all the walkers' tanks, a good thing as it was 30 degrees most days I was there, and towns were ok for resupplying.
I have written a report at
https://pinkcapadventures.blogspot.com/ ... yorke.html