Ah yes, the PWC's (PersonalWankerCraft). You'd think driving in circles would get boring, but they seem to love it.
I drove one quite a bit when I was younger and living in Canada (it was my parents 3-seater) and I was always frustrated that it had such poor fuel efficiency/range. My favourite thing to do was just keep driving straight off shore until I could barely see land

Too bad I hadn't discovered how easy and fun sailing was. You don't see many dolphins following around jetskis!
We'll be living aboard full time, yes. We're not big on Marinas (mostly due to cost). However, I was pleasantly surprised at how nice East Coast marina in Brisbane was. I'm sure hope harbour would be nice too.
We're aiming to be on the hook 90% or more of the time. I work from my laptop during the day, so the boat won't be left unattended for long stretches. I'm planning the solar/wind systems already. My wife works in Southport, and there's a jetty right there. We'll have a fast-ish outboard/inflatable for trips to work, and a hard rowing dinghy for everything else.
I still need to learn the area a lot better. I've been here nearly 6 years, but have only explored the water from out 15' racing dinghy. Not sure where to fill up for water, empty holding tanks. etc. I suppose the yacht club.
Who's organising these raft-ups? sounds fun.
The boat we're most keen on is a Kendall 32 (Westsail 32 hull, except a flush deck). We should hopefully be aboard in about 4-5 weeks from now.