The elusive Bob Lamacchia
I also tried to contact him last year by all means published. He never answered any of the messages I left on his landline. The mobile number was always out of service and the emails bounced.
I also checked the Darwin white pages and could not find any trace of him.
If it's just your bikes that are causing a problem, Perkins can easily ship them for you. They sail about three times per month and the cost (if I recall) is under AUD$200.
As to your good self, that is another story. You can't travel on the Perkins freighter (I've already asked), and there's nobody else that I can flush out who provides the service.
I have also tried to contact the Darwin yatch club to pay for passage, but nobody there even acknowledged my emails. It must be a Darwin thing. I have been registed on a web site for 6 months to act as a paying volunteer crew for anybody who is making the journey in the right timeframe, but nill responses.
Last time I checked it was posisble to fly on Air North for AUD$170 if you book far enough ahead. I would take any option ahead of flying, but it seems there isn't one.
Sorry for the discouraging news