My favorite way of grilling many things is smoke then sear. It's easy on a Horizonal grill, but a little harder on a kamodo.
Ground sirloin burgers ( was on sale) put on top rack with diffuser on main rack.
Smoked at225F for about 25 min , then removed diffuser & put burgers on main rack.
Opened vents , temp to 450F in a couple minutes & grilled burgers.
Next time a steak.