^ You could farm 16 Sandkings, or more, solo in the 16 minutes between 0900 and 1700, then do some I/E work and/or headhunter etc, and come out way ahead.
I miss the Vinewood D2 spawn, Rockstar are such dicks sometimes.
Video reposted because it's easier than the OP's IMO (no f*cking around with cameras, just lift off by the green bush like I do);
Spawn, tracker, repeat. Or buy the nearby garages if you don't want to lose $2k on a tracker, but I much prefer the mindless and easy loop.