AB,
Interesting theory, I'll have to try that one next time out. Your right it does contradict everything and everyone I have learned B'Mouthin' from. Couldn't agree more when the target is returning spawners. Up high early in the morning, drop down to 80 - 120 by mid-day and back up top as the sun sets.
DR,
As for the color question depth makes a huge difference as to what color to choose. The reds, yellows, and violets of the color spectrum are pretty much gone by the time you hit 35 - 50 ft. The colors that will show in depths of up to 120 - 150 ft are the greens, blues, and blacks. The reason that glow works so well is that it gives off a green tint. As for what depth 80 - 120 ft has been where I have caught most of the B'Mouth.
Good luck and tight lines, Jeff