Hypothetically speaking:

What does it take to be a Cannabis dealer?
I'm not talking about those thugs that rip you off and end up in jail.
I mean to become respectable, and stay out of shit;
thoughts?

keep a tight circle, do not associate with anyone thats been in the law enforcement radar [even if not arrested], and keep the sketch on the d/l

Honestly, all it takes is common sense. I've dealt with some pretty dumb dealers that never get caught.

Are you supposed to say thank you to your dealer after s/he hands you the bag of weed after you pay?

Haha, that's more on the buyers side.
But of course you would say thank you if you just scored some bud!

takes money to make money nigga