Andrew replied:

Wollogorang is the answer.
Been there last year.There is a track that goes
all the way to the beach. There is a sandy crossing so
heavy camper is a no no .
Need to leave deposit ( bond really) for rubbish which you get back
when you bring your rabbish with you.
Wollogorang station has a bar and camping area with showers.
Note : fuel very expensive - $1.45 per litre of diesel.

Graeme replied:

Comparing the 2 places is like (facilities' wise) chalk & cheese. I stayed in Hells Gate last year & facilities were MUCH better than at Wollogorang.

Access to the coast I know nought about - was on our way to Lawn Hill via Kingfisher & Bowthorn(spelling?) so ...

Andrew replied:

Tim
I think there was a charge per day but not sure how much ( $20 ?).
As for compering Hells Gate to Wollogorang , I fuelled up at Hells Gate but
did not see anything other then a pub with 2 fuel pumps . Did not see any access to Gulf waters. How was this MUCH better then Wollogorang I don't know.

Wish that people that say that one place was MUCH better then the other at least were more specific.