I have been fishing one of the most heavily fished still waters on the eastern side of Washington State, and I have tied several scud patterns. Each of them has a spot in my still water box but I came up with a simple and most effective pattern ever.

What I learned about scuds is that they develop an "orange-hot-spot" caused by internal parasites. Some might refer as "pregnant spot" but the fact is "dying spot" that makes any still water trout gorge on dying scuds.