Insurance

Best advice is put the insurance money towards a good tent and leave the trailer near Cairns. You don't see many trailers on that trip and many of the ones you see are abandoned I'm told

Dolfn,
Read your other post re Ultimate, Just bought a Tvan and Insured it before delivery. Just too many dollars involved not to insure. Somebody might think they need the van more than you do - heaven forbid!)
Here in NSW found NRMA (or whatever they now call themselves) to be reasonable but shop arround for best deal and offroad coverage.
Re Cape, believe arrangements can be made to leave trailers etc at Cooktown if necessary. For myself Kangaroo Island in April will be fine though will have to practice reversing to get on the ferry.
Cheers
Bob L

Camper Trailers are fine on Cape York. Took mine to the tip and did the OTL except the last 3-4 creek crossings at the northern end. My brother in law rolled his (at virtually no speed) on Gunshot but we rolled it back over (undamaged except bed was wet). They key is to keep speed down.

You may have problems on the bypass roads due to corrugations. We opted for the OTL where possible as it was more scenic, less dust and hurried. I would take the trailer again.

As for insurance, join a 4WD club and get the TCIS insurance which covers vehicle, trailer and camping gear. I have only claimed a replacement windscreen on this policy and they were fine to deal with.

As for accidents, the only problem I had on my trip around Oz via the cape was wiping out the menu board at a drive through Red Rooster in FNQ. The sign said 'drive through takeaway' and that's what I did to the sign. Red Rooster claimed for the damage on their insurance and could see the funny side of it too.

Tcis Insurance is OK
You should get NRMA Plus road service. This will cover you for towing the trailer if damaged and you cannot tow it to a service centre. Only another $24 - but worth it.