Used them today...talk about frustrating. I tried a few different types, and all got the same treatment....the trout were attacking them very viciously at times, banging them with their heads and their tails, swirling at them, charging after them when I retrieved them, but not one sensible hook up did I achieve.
I tried using stalking tactics, creeping about in the marginal reeds and dropping th popper on a trout's head and just twitching it about, making all those rubber legs wiggle about....but all I got was the same attack response.
Drove me mad, in the end I went back to the good old epoxy buzzer, but there is more to do with these poppers, I'm sure of it. It's just finding a way to trigger a take instead of an attack.