Hi Sam,
During my Summers in AK, most of the fishing I did for myself was for Pike after work. Love that fish!!! My input is dated, but some of my experience may prove helpful. In those years (70's), the pike were measured in pounds not inches. It was the rare day where one over ten pounds wasn't brought to hand and there were hundreds of them over the season.
Fluoro is a bit pricey. If that is an issue, a $3 spool of 40 lb Maxima will get the job done. Landed many, many over 15 lbs. and never had one cut it. Don't go heavier than 15 lb Maxima somewhere in the leader unless you want a broken fly line in a snag (lazy anglers that wouldn't listen to this tried it once only). For bigger pike (over 10 lbs) 3/0 hooks work better than large trout streamer hooks, as does a subtle sideways sweep of the rod in conjunction with a strong haul. You need much more hand than rod and you need to hit them more than once if they don't turn away on the take. I've seen lots of fish missed because of the use of #2 trout streamer hooks and trout hook sets. The bigger hooks make release easier as well.
I fished for them mostly prior to the advent of Boca grips, fluoro and kevlar gloves. Those are vast improvements, but I've seen hundreds of big pike effectively landed and released without harm to fish or human using canvass gloves and long handled needle nose pliers. A lot of old timers used to handle them by grabbing them by the eyes. They do stop thrashing and pop their mouths open nicely. It was claimed no harm was done to the fish and safer (for both angler and fish) than those monsters thrashing in the boat or net. While an effective way to subdue them, I have to believe that it can't be good for a predator that heavily depends on it's vision. I wouldn't do it. It takes 75 years or so to grow really big Pike in AK. They are a precious resource... What are your thoughts on the practice, Jason?
As for getting them to take a fly, I observed the following:
1. Sometimes they prefer a fast stripped streamer, sometimes a deer hair popper on the surface. Be prepared for both. On still water, I usually started with the popper first.
2. No need to go with the outsized flies as used for Muskie. I preferred flies in the 4" to 6" range. Safer and easier to cast.:)
2. No need to go with the garish popper patterns popular with bass. Natural deer hair looks more like a little mammal swimming where it shouldn't and were usually much more effective. Perhaps because there aren't a lot of colorful amphibians in AK? Regardless, Pike aren't into color as much as bass.
3. The presentation is vital, especially over fish that have seen a fly or two. I liked to let the popper sit after the cast until the rings dissapated and then started the retrieve. Experiment with different pauses and strips. A jerky fast retrieve is also sometimes effective. You have to tease the big boys. It's kind of the angling version of calling ducks or turkey.
4. Streamers can be brighter and more garish, but I also found that simple baitfish imitations usually worked better. I carried a few Mickey Finn types, but mostly fished simple bucktails of blue over white and green over white. The bushier the better. Mine were tied Brooks Blonde style. Silver mylar braid body with a big hank of white hair coming out of the middle of the shank and a contrasting color at the head. I experimented with strips of flash in the hair, but found the fish sometimes turned away at the last second. Perhaps a flash at the wrong time spooked them? Don't over-do that stuff. The vast improvements in saltwater flies since then are undoubtedly effective, probably more so. But, they are much more expensive in time and money to tie.
5. In still water they are found along lily pad and grass edges and holes in the beds. Be especially stealthy around points (where the beds indent or jut out into open water); the big boys like those spots...
6. In streams, look for structure as with any large predator, but be especially mindful of structure at the leading edge at the top of a pool (on the slow side). They love to face upstream hidden by cover so they can turn and use the current speed to pounce on anything that would drop into the pool from behind.
7. Similar structure at inlets and outlets are also their favorite hunting grounds.
Hope this helps. Good luck on your trip!
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman