The only hints i can think of are, always think outside of the box when looking for these things. Alot of times they are in plain sight and you will never see it.
Imagin the unimaginable locations to hide stuff. You could be looking right at it, and still not see it. Some are easy, some are hard. Don't give up, you will begin to look at the world with new eyes. You will discover areas in your own neighborhood…
Awesome video,s, entertaining and inspiring,made me start up my 81 vanagon,and away we go,oil leaks and all,streaking down the highway,looking for adventure,thanks