Wailing is off McGilcrest right? Wirth is behind Wal-Mart? Correct?
If I am correct then my stories below are correct w/ locations...
Personally - Only time I caught fish from Wailing, was after ODFW stocked it right in front of me. . .
Wirth - Nothing. I've only fished for Cats there, no luck. I have fished the back pond if you follow the river, caught some nice Bass and Bluegill, but I would only go back there if you're experienced. It is a mess and little room to cast.
Yes, you're directions seem accurate. Wirth has been stocked w/ trout several times recently. It's probably worth <pun intended> going there; if you want to try for the trout. I would be surprised if there are no cats, so keep trying.