One or two material patterns are great to tie, especially in a production mode. I'd think the CDC fly shown in the video might work better on fast moving water rather than slack water though, because it doesn't have great definition. The slower the water, the more time selective fish have to inspect a fly before slurping it down... just my opinion.
One of th ebetter two material patterns is the CDC & Elk.
a BIG TIME NOD
to my buddy Hans Weilenmann for this fly!
I've used the split thread method for decades, works great with Danville threads, and you can also use floss if you want to do a split thread body on a wet fly. About the only thread you can't counter spin and split would be something like a GSP, or any other 'spun' thread with a core that's over wrapped wrapped by an outer layer.
Another old-time common practice was to tie in a 'loop' of fine wire at the end of the body and use it to pinch and spin materials, similar to the split thread method then wrap them forward and tie them off.
Split thread dubbing, or deer hair or marabou, etc has been acommon practice for a long time, just may not be seen or taught much any more.