Considering the handbook suggests keeping both hands on the handlebar, I think no. 2 kind of overwrites the rest of the law.
100 feet on a bike is along time of compromised control of the bike. I signal a turn judiciously, but when stopping, I am much more interested in having 2 brake handles in hand. Its kind of important on a recumbent trike with both brakes up front.
Having said that, when I know there are bicycles behind me in the bike lane, I will signal slowing then.