Leave it on! I never bother with knocking it off. However, it will smolder if your fire is not hot enough which speaks to another problem.
Secret: I grill with oak bark all the time. It gives a nice flavor on beef!
Peace and Smoke,
My Weapons: Custom rig - Kandi, UDS; Bubba Keg; 22.5 WSM x 2; 18.5 WSM; BWS extended party; BWS Gator and an Onyx Oven; 29' ft Coachmen Leprechaun (Lola).
Dan Chambers get well soon, so we can tell you to "Shut up Chambers"