So, is Hardball the golden ticket?
Unfortunately, there are NO golden tickets, but HARDBALL certainly has a fit when 2,4-D is a suitable approach - and it even contains a very good "in-can" surfactant.
However, many factors come into play when determining which chemistry is most appropriate - or, if ANY chemistry is appropriate for a given situation.
2,4-D, imazapyr, glyphosate, triclopyr, fluridone, imazamox, flumioxazin, diquat, carfentrazone & bispyribac-sodium. That's ten active-ingredients which have aquatic-use registrations
under specific brand-names and formulations. Each chemistry possesses certain advantages and disadvantages. A site-matrix is often the only method to weight the pros and cons of the various options to determine which one best suits a given situation. Sometime, none of them have a fit.