Ron, several worthwhile approaches to Pike on the fly.
My prime attack is with a Greys 9 foot Esox Fly that throws a 10 weight line. I use a Dragonfly kingsize for the reel (best value disc drag reel I could find) and the Masterline Toothy Critter Intermediate pike fly lines in a 10 weight. 100 yards of 30 pound backing completes the set up. I fish mainly large windswept Lochs, so I need the beefy set up to cast my flies, which I tie myself. I guess the flies range from 4 to 9 inches in length.
My lighter outfit is a 10 foot 7/8 weight Normark Norboron rod matched with another Dragonfly and a cortland 444 nymph tip 8 weight line. The line is cut back about 18 inches to aid fly turnover. I use this for light streamers, smaller flies and surface poppers.
Talk to many American anglers and they will recommend streamers. They are great for casting into the wind etc, but I do tend to dress a more "macho" fly. I like Bunny Bugs, Dalberg divers, BIG muddlers etc, and I have a few "creations" of my own design. These mainly contain a large deerhair head with eyes and either a long wing of bucktail/peacock/lureflash, or up to 12 saddle/schlappen feathers tied to flare out. Another successful addition is the use of unravelled Mylar tubing. A game angler here in Scotland was the first person to use it, I believe (Barry Duffy) U dress a fly with just a hair wing, no body, then tie in a 6-9 inch length of mylar for a tail. Unraval all but the last inch closest to the hook. Add a collar of varnish/super glue to prevent the myler from unravelling more. It looks great in the water. Add eyes and away u go. If that makes sense.
For traces I use two meaterials. One is a kevlar braid that used to me marketed by Olympic. It only just sinks and so I use it with lighter flies. It can be knotted like mono and it is semi stiff. The other is the Fox soft wire. Its only good for one fish really, but its nice and thin/light. All traces have a small clip one end and a small solid stainless ring the other. Never try and attach wire direct to nylon leaders!
In spring through to autumn, I tend to fish the surface layers, down to about 3 feet, winter, I drag the bottom. Retrieve can be anything, like triut, u need to find what they are doing on the day.
Another thing....Match the hatch! If Pike are striking at 4 inch Perch, dont cast a 7 inch orange lure at them. If the water has a large head of 6 inch roach, fish a fly that looks like a 6 inch roach! I have found they wise up pretty quickly to large gaudy flies...so try changing flies regularly...
Well...I hope that helps....