I too was on the river today. I fished hard for about 7 hours straight.
Despite my best efforts, I did not hook one good fish all day. In fact the only hook up I did have was a very small trout or something that bit on roe (released immediately) I also tried roe, spinners, some roe, and small wool tyings.
There are some fish in the river but it is SO low and clear, the fish can see your line a mile away. To say that the fish are tight lipped is an under statement. On one run I found, you could see a small group of coho holding together at the end of the run. I put on a very light leader and some roe and was sure that one would go for my presentation. The fish actually saw my line coming down and moved out of the way. I would estimate that the fish were moving away as soon as my line was four feet in front of them.
After this incident I packed it up for the day. It is my humble opinion that the Vedder River is not worth fishing until we get a SERIOUS amount of rain, at least a few good days down pour. Hope you have better luck than me, Ernie