I make mine a little differently. There are one of the first appetizers to go.
I wrap the water chestnut with raw bacon then broil for approx. 5-6 minutes, drain the grease then broil again & drain one more time then add KC Masterpiece Original BBQ Sauce (this brand makes a big difference). Then broil for another couple minutes. The bacon and the sauce is nice and brown and crispy.
I also use a cookie cooling rack to put over the chestnuts when draining the grease.