Ki, also with regard to Cape York, i did some more research on the cape york route and swimming water may not be as scarce as I'd first thought. When i looked at these resources i was even more keen than i am already.
http://epicrides.com.au/epic-travel/capeyork/capeyork-overview/
I also found a good national parks online brochure which showed where all the
http://www.nprsr.qld.gov.au/parks/pdf/cape-york-vg.pdf page 12 13 and others looks very useful. I"m not going to bother reserving any camping. It looks like a headache and besides i read that the rangers are fairly sympathetic to cyclists.
I have decided I'm going to fly up to Horn Island and ride home.

