Depends on what and how you are cooking with for the chips after 4 hours. Turkey will still need chips after 4 hours, for example. Depends on IT.
Homemade Wood Smokehouse, Charmglow gasser, Smoke Hollow, UDS, dual chamber homemade grill
Certified MOINK Baller
UNLINED DRUM KING OF CHICAGO AREA
Scrap Iron Chef