It looks like sturgeon will be catch and release only in July below Wauna Powerlines. Also, many guides and most charter boats will be focusing on salmon in the ocean then. I'm sure some of the guides would be willing to work the estuary for sturgeon.
Without a doubt, my favorite professional fishing guide is Mike Kelly of Fish Reaper Guide Service. He works both in Idaho, Alaska and in the Columbia of Washington. He has always been willing to share information with me (most guides are tight lipped about what is working and where fish are being caught) , is always willing to share the river with a local, is polite and professional. Oh, and he catches more fish than any guide I've observed in ten years in this area -- especially spring chinook. His boat is open, dress warmly.
http://www.fishreaper.net/
Of the Charter Boat outfits, I really like Sea Breeze Charters in Ilwaco, WA. They have been in business for decades there and are willing to burn the extra diesel to get you onto fish. Request Capt. Perry if possible. There site is:
http://www.seabreezecharters.net/ The last time we fished with them was a staff fishing trip. One lady caught four huge chinook 24 - 32 lbs., the boat nearly limited, maybe just one or two fish shy of the two per person limit.
For a real kick, try oversize sturgeon fishing up in the Columbia River Gorge with a guide. These are the largest freshwater fish in the world, 8-11 ft. long. You use 5 lb. shad for bait. It is catch and release. Once hooked, many of these monsters race to the surface and jump! C.W.