.I have the two piece tray but only use the bottom one. I put about 4-5 layer of foil on it and then take a layer off after two or three cooks. Also stick a paper towel up the grease drain to prevent it dripping on the floor when it gets hot outside.
Genius! Why didn't I think of that. I just started doing foil about a year ago as it keeps it so much cleaner, but I don't change it out until it's a must do. AKA starts on fire or needs cleaning to the point smoke is coming back out the hopper