Yeah, bait isn't closed until september.... Theres gonna be "a lot" of water... its about double the flow for what it usually is, and the more water, the tougher that place is to fish... I think it'll be manageable though. What will be in there is summer steel/ half pounders and early fall chinook, as well as resident trout. Most of the fishing I have seen done in there has always been off a boat, which rafts arent easy to fish from, because of all the gear that makes them heavy, and no anchor. "The Rogue River Twitch" is a popular way to fly fish from a boat, I dont know if it'll be possible for you, but what I have seen is a lot of dark, ie Black and brass bead headed flys, and you row back against the current, with your flys 50- 75' out in front of you and you twitch the flys back in towards you then let your rod tip sink allowing the flys to sink in the current, and this technique does great for half pounders. Little black and brass spinners do great in there, dragging them behind your boat as you go will pick up steelhead. I will recomend fish the mouth of every cold water tributary that you can, that water in there will be at or near 70 degrees, and those fish in from the ocean will be looking for a cool water break, also a lot of the fall chinook actually spawn in the wild and scenic area in the numerous side creeks, some will be staging under them, and also the up river fish will be taking breaks in the cooler water. Drift fishing yarn/ beeds/ corkys on the bottom will produce steelhead/ salmon combined with scent or bait, is a technique in there, as well as just straight up plunking at camp, ghost colored Spin N Glows are the favorite below foster bar, so I am sure they'd work good in there.