The best way to do it to preserve your own well-being is to approach someone who works at a particular place, like a wood carver or a shop keep, and ask him to guide you. Most rasta-types are happy to do so for a small fee. This way, you will know his name and where he works, so there is some security in getting in a cab and heading off to a field. There are a lot of them close by. I've done it a few times, and it's fun.