Jkilroy,
I'd forget trying to 'look' like the natrual.
The gurgler will 'swim' like a duck or small animal working it'sway across the surface, and that's probably much more important.
All the mouse imitations I've seen just drag on the surface with no motion. That broad, flat face on the gurgler will give you some side to side motion, which is what happens when a duck or mouse is paddling with it's feet.
No fish watches for the 'mouse' or 'duck' hatch. This is opportunistic type stuff. The fish won't look closely at the fly to see if it is really a duck. The thing is getting away, and the fish is either going to eat it or not at first perception.
Guglers are quick to tie, use inexpensive materials, and work well for this. Sometimes the better mouse trap is already built....
Buddy
It Just Doesn't Matter....