There are a lot of after market grill pads available to catch drips and protect the deck. Another option might be a steel automotive drip tray such as this
https://www.amazon.com/Hopkins...erator/dp/B000F5XQMO
or
https://www.amazon.com/Lumax-L...N5MSEJ5GT390XQE63M9R
Would depend upon the leg to leg measurement. And being metal, you can wipe up the drips rather than trying to wash them off or out of the rubberized/fabric style bbq pads.