Slow rolling and waking are two different things. Slow rolling is when you are presenting the lure, usually with a single Colorado blade, close to the bottom, around cover, structure, etc. It's used a lot during the winter months, and a lot at night.
Waking, on the other hand, is presenting the spinnerbait just below the surface of the water. It's usually a pure reaction strike that occurs, as you are presenting the lure so fast that they do not get a good look at the lure.
It will work well in clear water, but you have to get the bait moving quickly. It's great in stained water, where the visibility is hindered, and they are only going on the vibration produced from the lure.
Instead of going with the willow leaf blades, which are perfectly good for waking the spinnerbait, why not try the long drop blades, that are a mix between the willow and the Indiana blade? Best of both worlds..........flash and vibration.