I'm going to look harder into what is available up here in the way of chemicals.
WW: I've conducted a lot of research for a project in one of the eastern provinces and found that the only aquatic herbicide available in Canada is REWARD (diquat). To say that that treatment-options are limited in Canada is an understatement!
REWARD is a potential option for Eurasian watermilfoil; but understand that the best outcome with its use is a "herbicide haircut". The milfoil will growth back - maybe even quickly - behind a REWARD treatment (via sub-surface injection).
