For those of you who fish with me you'll know that I'm a bit of an ultralite fanatic. My typical coho setup using spinner/spoons is a 6 foot Abu Garcia UL spinning combo loaded with 6lb test

The only thing about this setup is 1 I don't usually fish in area's with too many chums, and also, I fish in area's with no current so its usally a pretty fair fight. I typically toss size 3 blue foxes or dick nite spoons.
As for fly fishing, I just bought a 5wt setup, but then again I'm an ultra lite fan. Most people generally use fast action 6wt's or 7wts for coho. But then again I don't really have alot of experience with this subject.
I just went over my numbers from last season and my catch was broken down like this:
Colorado's 50%

, Other Spinners/Spoons 23%, Roe/Wool 18%, Flies 9%
So as you can see I fish alot of colorado's. The thing is that I don't swing them through runs as most people typically do. I usually cast to canyon back eddies where the fish like to stack up and rest. My gear setup is my usuall drift rod setup with 15lb line. Between my float and wieght I run about 5 feet (any more and I can't cast across river, any less and its too shallow) my weight is as heavy as my float will allow. This is more so for casting than anything else. Between my weight and my spinner I typically run 5 feet leader

Ya thats right 5 feet! For a spinner I use a blade thats between the size of a nickel and the size of a quarter (sorry I don't know the actuall size), as for color, anything will work, copper, silver, gold. all depends on the water color and what the fish have seen alot of latley. (If the bight goes off change colors....belive me it works)
As far as presentation is concerned, I can't emphasize the speed enough, SLOW SLOW SLOW. Baiscly, what you want to do is cast over to your back eddie. Presumably, current will be rather minimum. Allow your spinner to settle in and the start reeling. Inch your float across the surface. If you any feel resistance, or loose sight of the float, set the hook! If you're set up right you should be well above the bottom and the onlything on your hook should be a fish (much like short floating)
Don't know what it is about this technique but it sure pisses off fish pretty good. I'm sure it must be a reaction strike b/c some of the fish we pick up this way are well past their prime and would have never fallen for roe.