I did the same hunt you did Rocket Red. Lake Clark Air used two seaters with tundra tires for us though. They put us about 7 miles N of Lake Iliamna (flying from Lake Clark) and right in the middle of a crapload of caribou.
This was 8 years ago when the Mulchatna herd was topping out. My bud and I shot 4 trophies and had excellent ptarmigan hunting and fishing for rainbows and greyling. The only negative was my buddy who I asked to bring a shotgun brought a snake charmer....good thing ptarmigan hold tight. The pilot who picked us up after 6 days asked if we found the birds and fish with a big smile on his face. He said we def. got the "good" spot for those as most other camps were nowhere near any water.
While in a little village tranferring to a 6 seater for the flight back to Lake Clark we ran into two guys coming out 3 days early. Seems they shot two bou 300 yards from their tent and 2 brown bears showed up to eat the carcass. They said they didn't eat (cook) or sleep for two days and came out early. They had a much different trip than us and we were 5 miles from them.
The tundra is a beautiful place. I have very fond memories of that trip.