Convert Brinkmann Charcoal Grill/Smoker to Cold Smoker

[korpellakitchen]

I have an OLD Brinkmann Charcoal smoker.  The door is really small to refill the charcoal pan (annoying).  How would be the best way to go about converting it to a cold smoke smoker?  

 

[oldschoolbbq]

just a thought but shut the door and place the AMNPS in the bottom.