Depending on the trolling depth may effect the results, how far dose sound travel thru water.?
Sound can be used as a attractant for multiple fish species ( seems as though i have read this )
If so, than the generator for sound waves, if controlled tones matter could make a difference.
I think I will try to lower some water proof speakers, we can try different types of music or rhythm patterns
to establish best results per species. This combined with Cannons EONS may be what we are all looking for.