The closest public one I am aware of right now is the system 2s document from ERL/Aquamist. They have an example of how a potential 3d water map would look graphically with explanations of the increases and decreases along the axis.
Using that as an example of the shape a tuner would start with the set up non-WI tune and add water in on the points most stressed and requiring the richest fuel and least ignition advance. The water added should ease those requirements permitting fueling to be reduced and requiring ignition to be advanced. It becomes an iterative process at this point until the tuner is satisfied that the tune is achieving the sought after objectives.
In this case with Phil I would expect it to be some significant power improvement with good realiability and stability - not the ragged edge. But I am pretty sure that is what you are looking for.
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