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Lake Chelan is a good suggestion but you better be in good shape. And you won't find whitetails there, only mulies.
I know there might be the occasional whitetail in the area but mule deer are far more prevalent. I'd think finding a whitetail by Lake Chelan would be like finding a needle in a haystack.
T-Dozzer, I read about doing the snake and that is what started this boat idea out. After looking into it more, is sounds like quite a few people hunt from a boat off the snake and the public land is pretty limited. I'm not set on whitetails, i just figured it would be easier to find a couple of them. The brothers are starving college students and are hoping for some meat out of the deal. Idaho would be ideal, but the out of state license cost is a deal breaker right now. I love northern Idaho if I could get a job there, I'd move there.