Ive been grilling for years so I know most of these tips (dent the burger, dont smoosh them, etc). However I always cook lid open and I have heard you should get a char on each side then close the lid. Do you close at all?
I do close the lid the entire time when I'm home, but the grill at the beach is super fickle. The middle burners need to be on high to do anything and the edge burners need to be on low or they will roast everything near them. We've had that place for two years and it is has been quite the learning experience trying to figure it out. It has a thermometer on the lid and it will regularly shoot up to over 500 if you leave the lid down too long. I usually stay around the grill and check on the temp and play with the knobs.
At home I typically only cook plain boneless skinless chicken breasts, since I try to eat healthy when I'm home. That is easy. Throw is on the grill, close lid, flip after about 5-7 minutes, and after another 5-7 minutes flip again and rotate the pieces for another 5-7 minutes.
I do my "fun" cooking at the beach. We have a compound of about 7 houses in our area that brings about 30 people to our house for dinner on a regular basis. Last Memorial Day I made about 75 Chicken Burger sliders, so that was an experience trying to cook them all on that grill. Had an intense rotation going, so the lid was never closed long enough to create an inferno. I had four different kinds going, Western (Cheddar, Onion Rings, and BBQ sauce), CBR (American, Bacon, Ranch), Caesar (Parmesan, Romaine, Caesar Dressing), and All American (American, raw Red onion, Romaine, Tomato, and Mayo) so I was trying to plate them at the same time. The year before was Chicken legs, thighs, and breasts. The night before you put them in Ziploc bags with pepper and garlic salt. Then those are done low and slow. I turn the burners all the way down and close the lid. I wait 10 minutes to check on them and they usually take 30 minutes or so to cook.
I do a lot of my cooking by feel and look though, not so much time based. I've been into cooking since I was a kid. I've probably watched more food network over the past 20 years than another other single channel, I took as many cooking classes as possible in high school, and I was a chef at Macaroni Grill for a summer in college. My dad will regularly try to recreate things I make and then get mad when I don't have amounts of things I used or exact time to cook things. I'd be a terrible baker, but grilling is right up my style.