Crane Prairie is good in the Deschutes and Cultus Channels for sure but watch water temps in the afternoon and fish in the morning and quit if it hits 68 or higher. 
Leeches, Chironomids, Water Boatman, Red 2 Bit’s and Blobs are some good ones to hang on the indicator rig or strip on an Emerger Tip, Hover or Camo line.