Free: Contests & Raffles.
A few questions:1) Are the summer runs naturally reproducing wild fish? hatchery fish? or both? If both, what percentage? - Both, but highly dependent on the system that you're fishing. You'll encounter more wild fish in the Columbia and tribs than most of the coastal or Puget Sound streams. Rivers like the Cowlitz are almost exclusively hatchery.2) What techniques to target them? - Similar techniques to winter runs, but scaled down. Guys side drift bait, float and jig/yarn/bait/bead/worm/etc... More guys toss hardware like spinners for them. The techniques will change as the water drops and clears throughout the summer.3) Will the fish die due to overheating while fighting them? - They can if the water you are fishing is warm enough. Use your discretion.