Please Explain Bubbapucks and their use......

[feinhorn]

Lot of people talk about them but can't find what they are used for.

[FLBentRider]

They are used last in the puck stack to push the last of the pucks onto and then off the burner. That way you do not have any half-burnt pucks. Pushing the last wood puck off the burner prevents it from burning too long and making bitter smoke.