John Wentworth wrote:
I boat and fish on freshwater lakes in New Hampshire and some of these
waters are becoming congested with non-native plants, especially milfoil.
There are some waters that more resemble a meadow than a river or lake. When
milfoil reaches this point the water is lost to both boating and fishing,
although some milfoil seems to provide cover for fish and improve fishing.
Waterfront residents seem convinced that the source of the milfoil is
non-resident boats, and the operators of those boats claim they always
inspect their boat for milfoil before launching. There doesn't seem to be a
consensus on what can, or should, be done, or who should pay for it.

What's being done in your area? I know that southern areas have fought this
battle for years, but it's relatively new in northern New England.

In western NY, Finger Lakes region, there are two lakes close to Keuka,
which are Waneta and Lamoka. In Waneta the actually have a thing going
regarding spraying for milfoil, and it's working. You can do a web
search for more info, here's a start:

http://www.lamokawaneta.com/