Emily Lucas checks over a boat June 25 before it gets put in the water at a boat launch on Cobbossee Lake in Monmouth.

William Eshleman of Norway examines a boat June 26 for any signs of invasive plants or wildlife after a journey around Lake Pennesseewassee. The lake does not yet suffer from milfoil, and courtesy boat inspectors are hoping to keep it that way.

Emily Lucas reaches in and checks a trailer roller for vegetation June 25 before a boat gets put in the water at a boat launch on Cobbossee Lake in Monmouth.

Emily Lucas reaches in and checks a trailer roller for vegetation June 25 before the boat gets put in the water at a boat launch on Cobbossee Lake in Monmouth.

Signs at the Lake Pennesseewassee boat launch remind boaters of the importance of removing all plants before launching and after boating.

William Eshleman greets Rick Dillon of Norway, who is preparing to launch his boat June 26 in Lake Pennesseewassee for the first time this the season. Eshleman is a courtesy boat inspector for the Maine Milfoil Project and checks boats as they are launched and when they come out of the lake.

William Eshleman of Norway examines both boats and trailers for any signs of invasive plants or wildlife June 26 at the Lake Pennesseewassee boat launch.

Emily Lucas checks over a boat before it gets put in the water June 25 at a boat launch on Cobbossee Lake in Monmouth.

A fishing boat trolls by June 25 as boaters come and go from the the boat launch on Cobbossee Lake in Monmouth.

During a momentary lull in boat inspecting June 25, Emily Lucas calls and checks in with another Friends of Cobbossee Watershed inspector at a boat launch on Cobbossee Lake in Monmouth.

After checking several boats and making paper notes on her clipboard June 25, Emily Lucas types the information into a state website using her phone at a boat launch on Cobbossee Lake in Monmouth.

A Friends of the Cobbossee Watershed boat inspection sign is posted at a boat launch on Cobbossee Lake in Monmouth.