Setting two foil-covered bricks on the grates of any type of grill will give you an elevated surface that mimics the steady, indirect heat of a traditional Japanese grill. Cover each brick with two layers of foil and lay them about 4 inches apart, with their narrow, long sides down. Lay the skewers on the bricks and turn occasionally as they cook. (As an added bonus, the skewers are far enough from the heat that they don't need to be soaked before grilling.)
This tip appeared in the Prep School section of Bon Appetit's May issue and isn't available online, but there is a helpful description of the set-up on The Food Section.
• Check it out: With Bricks and Foil, a DIY Yakitori Grill is Born at The Food Section
Have you ever tried this DIY yakitori set-up?
(Image: The Food Section)