The fishing in Årungen has changed a bit up through the years, but there are still options. For perch I tend to use dark (black, blue) or very bright (yellow, white, etc.) jigs (7.5g-15g). For pike during summer I have had some success with flashy silver or silver/blue (big lipless crank baits, or spoon; 35-40g).
At Hale I usually, from a small dock, throw due south towards Morteberget, 5-10 m off the shore. It is very shallow there so 5g-7.5g jigs.
Gjersjøen is tricky, but there are some really nice perch there. Last trip I caught 6 perch, and a bonus pike. A couple of the perch came up with small "worms" on their forehead so they were pretty much hugging the bottom at about 4-5 m. I mainly used a 15g rugby head with a brown/gold plastic (see pic), and alternated between scraping it along the bottom and doing tiny bumps...
Skitt fiske!