A neighbor has used slow release Sonar with good long term results. Be sitting down when you look at the price tho!
Doesn't someone here sell a same ingrediant knock off for much less? The Lake Mower cuts through it pretty easy. However that stuff will reproduce off of fragments. If you have a full blown infestation it can be used to mow it and rake a majority of the material out. Either way you have to hit it with a herbicide when it is emerging for best long term results. And a lot of Eur Milfoil is free floating in mats. I'd use the Lake Rake just to get that out.
