If you want to land big beautiful brook trout in the spring try using Streamer Patterns, Minnow Imitations, Dry Fly Attractor Patterns and Match the Hatch to entice the trout to bite, depending on the weather and temperature you may want to fish different patterns.
Streamers
Some streamers you want for the spring are....Mickey Finn
Black Ghost (Marabou Version)and of course,
Muddlers
Minnow Imitations
If there is baitfish, match the minnow. If there is smelt, use smelt patterns, same with any other minnows. Here are some examples of Minnow Imitations...
Magog SmeltBlack Cone-head Woolly Bugger (with Flash)
Baby Brook Trout
Match the Hatch
If there is Nymphs or Hatching flies attempt to match the hatch and use flies that resemble these nymphs or flies. Use different fly patterns to match the hatch, here are some of my favorite...
Stonefly Nymph (Beadhead Version)
Pheasant Tail Nymph (PTN)
You can fish this with or without a bead-head but I like the bead-head PTN better. PTNs can be tied to fish from size 16-10, I like to fish them in size 12s.
Hares Ear NymphExtended Body Mayflies (Such as Green Drakes)Elk Hair Caddis
Dry Fly Attractor Patterns
These are by far my favorite flies to fish in the summer months! and produce nearly 70% of my fish on the fly! Here are my favorite patterns...
Fishy's Foam HopperRoyal StimulatorParachute Royal Coachman
Rewards!
Here are my awards for my efforts of fishing in the rain, hot sun and black flies!
Nice Sea Trout on a Magog Smelt Variation