Comparadun vs Parachute vs Thorax.

[FlySmyth]

I have seen both types and was wondering how those of you that know the difference decide when to fish wich?

Then the question of whether to go with a regular tail or a trailing shuck.

Help.

Ken.

[flyty]

"I have seen both types and was wondering how those of you that know the difference decide when to fish wich?"

They all tend to ride down in the surface film with the thorax riding a little higher, so all you can do is guess.