The only way you will get true Drago's Chargrilled Oysters is to start with Louisiana Oysters. Oysters from any other state is not the same, tast wise and texture wise and size wise.
The Louisiana way is to shuck them. It can be difficult if you don't have the proper tools, such as a oyster shucking knife. A thin screwdriver can be used. The way I do it is take a hammer and lightly tap the lip of the shell. Insert the knife and twist. the shell will pop open. Take the oyster knife and losen the meat.
Keep your oysters on ice or in the fridge while waiting to be cooked.
You also need to get the Drago's recipe. You can find it online. It's not exact but it's pretty close.
I would also stay away from tin foil or anything aluminum. Need to use the oyster shell.
Good Luck, Enjoy and Happy B-Day.
Bubba Keg / Stumps Baby / Super Fast Yellow Thermapen / Lodge Cast Iron Grill / Coon Ass Pizza Oven