Probably true that the dog can see your line better over the other mono lines in the water right next to yours, but he's gonna get ya either way.
As for the fish, they ain't so smart, but they are strong, and so is the kelp, a bunch of my summer yellows would have been buried deep if it wasn't for the spectra.
Wasn't an issue last summer, but the kelp is thick and strong this year....as much as I love fishing mono, I find spectra pretty comforting this time of year in LJ