This is Jim Johnson from Naknek River Camp (www.naknekrivercamap.net) again. I posted a nice report yesterday to your fly questions, but apparently my computer ate it, so I'll try again.
Last summer, our best flies were egg flies in #8 and #10's in natural shades of light pink, cream, cheese,washed out orange, etc. We also did very well on beads fished by themselves as an egg in the same colors in sizes 6mm - 10mm, depending on whether we were trying to duplicate a sokeye egg (6 mil) or a king egg (8-10 mil).
One of our best combo's was to fish the plastic bead in front of a cream or white streamer or larger size nymph (size 6 or 8 hex, pm wiggler, sparrow, etc.) This combo also works well with a small flesh fly as the trailer.
Occasionally, a brighter marabou streamer or leech pattern worked well in a larger size like a 2 or 4, fished on a fast sink tip line.
As for campground cost, we stayed at one right on the Kenai, where you could literally fish in front of the tent if desired, for less than $10. The Russian river campground is a few miles away and a little fancier, but still primitive for a few more dollars, but still quite reasonable.
We hiked all the way to the falls and fished the Russian and didn't see many people at all. It is a 2 mile hike, with a few bears around for atmosphere. Speaking for myself, I saw more 5 - 8 pound rainbows than people, by a long shot. There were also lots of salmon - sockeye earlier in August and silvers after the middle of the month. These rainbows are smarter than the average Alaskan bow, but we managed to put several big fish on the beach each day.
Jim
I suppose I should add that pictures of the nymphs mentioned can be seen on www.hillsdiscountflies.com under the steelhead flies section. Look at the pm blond, dirty blond, and the multiple versions of the Hex nymph shown. Also check out the strip leeches, string leeches and popsicles. I assume that you know what a sparrow is. If you prefer a different sculpin pattern, tie them in both small sizes like 6's and 8's and larger sizes like 2's and 4's. Woolhead's work great, but are too much work for me to tie.
Jim