From personal experience, smokin weed and trying to do an OBE do not mix well for me. One thing is that it WILL cause dependence and it WILL lead to a lot more problems with concentrating. I mean not if u've used it once or twice but when you start using it on a basis you will deffinately have consequences(whether good or bad). A lot of permanent zoned out feelings will occurr and you will notice this after a while. I havent smoked weed for like 9 months and I am still permanently "burnt".