Sage,

I may be making this more complicated than it deserves.

What I meant, put simply, is that if two different poppers 'sound' different to your ear, then the vibrations they put into the water where it can be percieved by the fish will also be different.

We have to remember that what causes the sounds we can hear with our ears are caused by the bait interacting with the water. While we can't percieve all the vibrations and and such that the fish can, we can be sure that if it sounds different to us, the vibrations it puts out into the water are also different, yes?

Buddy