After having lost plenty to the coals previously, I’d suggest three key things to keep in mind:

1. Have min 20% fat in the meat you use.
2. Strain any fresh ingredients (e.g. pepper) you use really well. Water is your enemy.
3. You need flat skewers and you need to pay attention to how you work the meat in: even, no gaps, and not too thick.

It was one of the pro golfers who once said that golf is a game of luck. The more I practice the luckier I get. So there is that.

Good luck!