Sounds a lot like the way I nymph, with a heavily weighted
bonefish fly and a smaller unweighted one.

When it's windy I put the heavy fly at the end.
When it's not blowing boats out of the water, I put
the itty bitty fly out at the end.

An extra-big barbell Crazy Charlie gets the little one
down. At the end of the day, the little nymph will out
catch the big one in terms of numbers. But the 2-3 biggest
fish of the day will (almost) always be taken
by the bonefish fly.

I started doing that on the North Platte in Wyoming.
But it works everywhere. Especially on large tail water
rivers: Big Horn, Missouri, North Platte, etc.