Only using direct grill heat
Meat cooks in heat. This is common knowledge. Putting hot dogs on blast and calling it a day, though, will get you into a lot of trouble. First, you have a higher chance of making your casings break open, letting the tasty fluids inside out. Second, there's a greater chance that your dogs will catch fire. If you enjoy your hot dogs burnt, this might not be a problem, but if you are cooking for others, especially kids, it's a good idea to have non-burned franks available.
By creating a two-zone grill, you may easily avoid utilizing solely direct heat. Put all of the hot coals on one side of a charcoal grill, and use the other side for indirect heat cooking. Turn on the burners on one side of a gas grill while leaving the other side's burners off. Start your hot dogs off with indirect heat on the side to prevent the casings from splitting open. Give them a good char on the side over direct heat to finish them up.