Sure, they will work, but I've not tried them on a fly rod, though. My favorite trout lure for a spinning rod is a Swedish Pimple with the little red doo dad hanging from the ring.

BB

My buddy swears by Blue Fox spinners which is all he uses for trout.

I was a Panther Martin aficionado in the day and caught my first spinner-caught trout on a Panther Martin and some Abu "French" spinners with rippled blades. I still tote size 0 & 00 Mepps spinners and some other goodies in my spinning kit for the rare occasions when I spin fish for trout.

BTW - I never could manage to catch a thing on a Mepps Black Fury or Mepps "minnow" spinner despite being convinced I needed them in my arsenal. C.P./Swiss Swings and Rooster Tails were equally ineffective for me.

Other things I used successfully for trout were tiny Castmasters, Phoebes, Dardevles and a really small Lazy Ike. These days Rapala X-Raps have filled the void for tiny Ikes.

FWIW - Hildebrandt Flicker Spinners can be easily cast on a fly rod. I've seen my nephew clobber trout on them when they ignored streamers.

RE: Black Fury and Minnow...I agree. Having amassed quite a collection of Mepps spinners over the years, I have come to the conclusion there is a lot of hype connected with them. I'm sure they all catch fish at one time or another, but the mystique seems greater than the practice, if you know what I mean.

BB

Nothing like opening a can of beer and getting impaled with a treble hook at the same time!

Forgot all about these until topic came up. Wife had me stop at a yard sale the other day when they were getting ready to shut down.

Mostly bass sizes: 25 Mepps, 3 CP Swings and 4 Rooster Tails.

Barry

My go to,is a Rapala X-rap in glass ghost. Or a f-3 or f-5 floater in rainbow trout. Pa trout aren't very savvy until or if they live long enough to get smart.