Oh... that. Not sure if I mentioned anywhere.. but I do not agree with any kind of profit that involves scripts getting cash for you automatically. I think that would include your property/stocks?

So, that would be some crossover between script usefulness and actual work input, and as such, I think it isn't a good option at the present moment he-he
As for the Reefer boats, maybe, but I am pretty sure that at the moment it is a lot easier to "rent" it from the state, m?
Although I personally did consider that... but I think that majority of players might not be that dedicated to it as it stops them from spawning their car back unless they have the above-mentioned dock-garage specifically made for their big boat C: