What part of the river? Below Bonneville closes on April 7 and I would expect the top guides to be booked now or very soon! However there are a lot of good guides to choose from on the lower river. FishHawk, Swanny, Eric Linde, All Rivers, Chinook Guide service, Lee Barkie to name a few. I see all these guys getting there clients fish year in and year out. You should start making calls to find out what dates are available. Sometimes if they don't have any dates open they will refer you to another who does. Good luck! Hope you get some spots! I can't wait to get after the springers myself!