Not to be a downer but if you're on probation you shouldn't be smoking weed period, but anyway, to answer your question, it takes awhile for marijuana to get out of your system and water does help but it's really hard to say if it will be completely out of your system. You can never really tell.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.