Gold
Gold...we always used the regular 1/2 oz. sprite, with the treble removed and replaced with a single hook, with a red bucktail cut about in half. LA Cox, one of my "secret weapons" used to be the smallest sprite rigged like above, but about 15" to 18" behind one of the small clear bubbles. Costs like a dream, and sometimes the bubble creating a wake on the surface, would attract reds.
Later
R3F