Dobs, for sure double bands can help aspetto. I sometimes use them on the T20. I still think they're not necessary, but no doubt they give some "plus" in power and range for big distant fish.
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For Mike's last question: My sea is the Thyrrenian in central Tuscany. I dive inshore (no boat) and the water is clear only after two days of wind from land, no rain, no surf, which is pretty rare. Also consider that if the wind is from north, the fish tend to hide in very deep holes and crevices (I don't know why). So it's not frequent to have days in which fish swim in clear open water. On those days I always bring on my 110.
When they make a video, they choose the right place, time and weather for a decent visibility.
I imagine that this is on the mainland, Sardegna must be similar to Ibiza right?