I take the lazy way out when it comes to burgers. 85/15 ground chuck, hand form 5-6 oz patties, spray with oil, lightly dust with Montreal Steak Seasoning and press it into the meat with my fingers, flip, spray with oil, lightly dust with MSS, press into the meat, dimple the pattie in the center with a tablespoon, then grill over charcoal with a couple chunks of hickory.
If you have a pan you don't mind using on the grill, you can have the best of grilling and frying by putting them in a slightly oiled pan then put that on the grill and close the cover. They get all smoky plus that great caramelization of a fried burger, best of both worlds.