Well as I originally stated, this only works for loading a batch of points at once.
MY logic was fairly simple, I sorted my batch of points by latitude/longitude, and as I looped through my data and plotted each point, I compared the last coordinate pair to the current one, and if they were the same, I created a list of sorts. Then, once I get a point that is different from the previous point, if a list exists, I create a default pushpin and put the list I created into the mouseover.
I've thought about ways to do this outside of a batch, or in a non-sorted order, but my ideas would require a handful of array management and looping, and for the sake of my application, just wasn't necessary.
