Can you use a public park's BBQ grill? 🏞️

if I'm visiting a park can I use the Park's barbecue grills so the answer is you can't because they're used for non- kosher meats let's say I bring my own grade along and I just place it on top of the one that's already in the park that also you should not do because since the one underneath it is in kosher when you put yours on top it's going to be tou it and the juices are going to drip down and connect it to so in effect you really end up using the non- kosher Grill as well only really suggestion is you'd have to cure the grill you'd have to basically sandwich it between a layer of charcoal and this would bring it up to be red hot and that would be what we call full libon and that would be the way to cure a grill you should also make sure that the sides if food is going to roll over to the side even the sides of the walls of the barbecue need to be koshered in this way as well