fish 4 all ,
Those flies look like they`ll catch fish, I`ve tried the round poppers too, but as you said they are very difficult to tie , and even tried to "shape " some IE "taper" the plug , but unless they are glued together perfectly it is almost impossible.
I`ve posted pic`s of my ties before and have pretty well settled in on a consistent tie for bugs .I`ve just recently started tying bead head bugs that sink at a very slow rate. The "poppers" are a modified crease minnow , very easy to tie.
A few pic`s