I sure as hell doubt the second one will ever work, unless you're playing against a retard because everybody will notice you getting in and out to park all those cars. The best method I had was getting on top of a trainsation. Climb the stairs all the way to the train platform. Turn right and jump over the fence to get on top of the staircase so you can climb onto the roof. This is a perfect place to hide.
I have never climbed into a bush... or have I ? I usually climb up on top of buildings etc, works well for me. Great vid though, thanks for the tips