If you don't want property bordering onto crown or public land don't buy it to start with? As far as I can tell that lands been crown long before the houses were there. It's a bit like some people around here buy houses near mines then spend all their spare time whinging about the noise from the mines. Others buy houses on the main road then whinge about traffic noise & trucks
Not condoning bad behaviour there but to me it would be a minority. Everytime I've been there it's been very quiet & no traffic in/out of there all day even with a few camps set up? In saying that I steer clear of Sofala as a whole in school holidays, long weekends etc. It gets pretty busy - all the more reason to not lose further land & create more congested camping + possibly more problems from the minority of trouble makers, whom aren't exclusive to this area or Sofala.
As for the access tracks there are alternatives that could be improved or minor re-routing carried out to provide more buffer. There's really only one track right next to a private house block, one passes close to another briefly in one area & one track passes the other private lot but it has no dwelling + is overgrown appearing unused/neglected.
One private dwelling showing track right near boundary (this could be enclosed to allow private access only) & alternative route that could be improved down to camping areas on the river etc.
The other private dwelling showing the track going close to the boundary at one point before branching left to the squatters site tucked in behind the private lot & right down around to camping areas.
This shows the other private lot - basically the rectangular block in the centre bordered by tracks. It is very overgrown, appears unused & neglected. There is no dwelling on this lot.
Point is access isn't impinging on them a great deal, certainly not as much as normal streets or roads would in built up areas, & there is in my opinion opportunity to re-route or improve alternative access away from the private dwellings allowing enclosure of private access without selling it off as a whole. This may be how they go about it now? One of my last responses suggested the whole lot may not be sold but rather portions of it. Hopefully something that can suit everyone is the end result.
Again I don't condone bad behaviour of what is the minority in most cases but I don't condone using that as an excuse to shut everyone out either.
As for owning the properties there. I really don't think they are any more inconvenienced or hard done by than property owners in small coastal communities that swell during holiday time or other people that own property bordering a whole range of public use areas. Surely they paid consideration to this prior to building there or purchasing.
Another interesting point would be how did these even become private lots to begin with. They could have been awarded under Adverse Possession (Squatters Right) over those portions of land to start with whether by current owner or sometime since the 1800's. Not saying they were for sure but the placement of those lots in relation to the current crown land suggests that it could be a distinct possibility. In that case it would be a bit rich now to expect others to stay off there hey?