Another variation of the Balloon Bust rules goes like this.
5 balloons set up 10 feet apart, on 3 foot balsa sticks, on an arc that coorespondes to the arc of the circle being flown.
Each balloon is worth 10 points, so if you line up and take them all out on one pass, you'd be awarded 50 points, but, if you fly over 4 balloons, and take out the last balloon, you woulod be awarded 10 points for each balloon you flew over, and 10 points for the one you took out, for a total of 50 points.
If you flew overr 2 ballons and took out the third one, you'd get 30 points. I think you get the idea. It's only possible to earn maximum points, 150, by over flying all but the last balloon in the series, and then again, and again,,,, etc.
If a balloons stick is broken, but not the balloon, the balloon with whatever amount of stick left, is placed back in line. I've seen balloons right on the grouind. makes it interesting.