By summer, blackflies have all but disappeared, but mosquitoes and deerflies are gathering. The latter can be a particular enemy in Maine, swarming about the head and giving a large, painful bite on the neck. Some anglers use deerfly strips, sticky rectangles of paper that attach to the back of your hat. Deerflies land and are trapped. The compound can be harmful to finishes found on fishing rods and fly lines, so wash your hands with soap and water after applying insect repellent, especially before handling your fishing tackle.
Maine publishes two sets of fishing regulations, one for open water and one for ice fishing.
No one should fish any body of water in Maine without consulting these regulations first. Special regulations apply to various locations, so what may be legal on one lake may be prohibited on another. The state's regulations, aimed at increasing the catch rate for the largest, mature fish, are complex. Efforts are under way to simplify them but even simplified versions will be lengthy. You will need to study the regulations carefully before fishing any body of water in Maine.