Don't bother with the corkies and yarn. The Big D is wide and snaggy. I recommend spinners for gear slingers. #3's to #5's. A #4 Blue Fox silver and chartreuse is hard to beat. If the fishin's slow, switch to brass or black blades. Stay below Shears Falls and fish current seams, pockets and around boulders and you'll find fish. Biggest problem that time of year is hot weather. White River blows the Deschutes out easily when the glaciers on Mt Hood melt. Also, the fish don't bite well if the water gets over 65 degrees. Have a backup plan in case of hot weather.
_________________________
If every fisherman would pick up one piece of trash, we'd have cleaner rivers and more access.