What is he using?

Probably a mini foo jig or something like that.

I sorta mimic somethin like this on my fly rod. In spite of the fact that I done have come up with some pretty crazy complex creations for steelhead, probably my most effective fly over the past few years is nothing more than medium bead chain eyes, a pearl sparkle braid body, pearl flash, and white marabou, has a nice lively action under water, often jis like to hop and sweep it and let it fall in front of a pod, been deadly on fresh fish this year. 

Prob just a little different jigging technique.  
 
I'm not too good at jigging for steelhead, but I find that using a bobber - or float or strike indicator if you prefer - helps me control the depth of the jig a little easier and helps control your downstream drift to get your jig in line with the fish.  Can be a good technique to use on schooled up fish in deeper water that aren't real interested in hitting more traditional drifted baits.   When the jig is suspended just off the bottom or up in the water column, just a little twitch of the rod tip gives it enough action to trigger a reaction strike.  

An Asian Fella down at Walnut is constantly hooking up jigging an artificial on a jig head on a long****fly rod. No body else would be getting hits and he comes down and shows everyone up.