I use one on the bottom of my smoker and gas grill as a liner. They are also good to cook directly on. https://www.amazon.com/dp/B071RRCLMF/ref=cm_sw_r_cp_apa_fabc_JVPPV7RC295KCT5GFZW7

For smoking and grilling red fish and speckled trout in Louisiana I would use soaked cedar plank also available on Amazon https://www.amazon.com/dp/B00NPC78Y6/ref=cm_sw_r_cp_apa_fabc_7KY5XW0S9PNW8S3Q433X?_encoding=UTF8&psc=1