Wherabouts in maine are you heading???? I like to fish streamers up in " Down East" Maine . I have pretty good luck with the Black Ghost, Grey Ghost, Green ghost, Barnes Special, Oatman Brook Trout, Dr. Oatman.& The American are my favorites. Actually any of the Rangely Style streamers work well.
Ck out This Site....Streamers - Raske's New England Streamer Page - Global FlyFisher
For Dries you might run into some late Hendricksons so tie some in 16"s & 14"s, Elk & Deer Hair Caddises in the same sizes. Bring some Stimilators for Stonefly adults for when they are active laying eggs & some nymphs also in various sizes. I carry a box of various body colored Comparaduns & Parachutes . Bring some Black flying Ants because they are daysavers sometimes..
Hares Ears, Zug Bugs, Prince Nymphs, Bead head Caddis 12- 20, in shades of green , Copper Johns, Pheasant tails & such nymphs are also good.
Bring some Emergers & Soft Hackles. & a few midges, The Zebra midge works well
Not knowing exactly where your heading I just basically described what I carry in my vest & over the years I think caught trout or Landlocks on most of the flies I listed...
For Bass I fish Hair poppers on the surface, early in the AM or at dusk & during the day streamers. & weighted Woolly Buggers & Muddler Minnows.. I once caught a 21" smallmouth on a deer hair mouse & the next cast to the shoreline a 6 incher took it so anything goes.
Anyway I hope this jumbled mess of info helps
As They Say