Basting adds another layer of flavor
Cook over a medium-hot fire, not a super-hot one. I prefer a medium-high fire to a really hot one because the small chunks of food on a kebab can char easily. Also, when you’re using a marinade for basting, hold back from doing so in the last 5 minutes of cooking. This reduces the risk of cross-contamination.
One last word on serving: While it seems like a cool idea and a dramatic presentation to give each guest his own individual skewer, wrestling with a skewer can be pretty awkward for most people. So, just grab the end of the skewer with a towel or hot mitt, use your tongs to slide the ingredients onto a warm serving platter, and tent with foil. That way all the components get combined and your guests can take as little or as much as they like.