Gungho, man I wish I could help ya but I have not fished that area at all. PM "Fish Mojo" he has. All I have is a marked up chart but it's almost all green after several guys have added their spots.

My advise...fish below the cans they mark structure and walleye like to be out of th emain current behind that structure. If you catch peamouth, drop down 100yds and you should be right in the walleye. I know they fish just below the umatilla bridge on the washington side. I've seen lots of pictures with the bridge in the background. That whole stretch from Boardman to Umatilla is good, but as for specifics...can't help ya. My advice, hire a guide. But if I recall correctly, your buddy is not up for that. You might also PM "bladebait" he fishes up there, you might even be able to tag up with him.
Hunt'nFish