Fishingfool ... I'll shed a little insight from my point of view.
The Kasilof generally sees two types of etiquette, one generally practiced by Kasilof regulars, the other by those that I'll call the "irregulars".
The June fishery sees a mix of these two, and rude actions are commonplace. It's become worse in recent years with the rash of closures the Kenai has faced due to low return. It's one reason I'm starting my morning trips at 3:15 this year ... to avoid situations like this. I'm out in front and rarely run into situations where the "irregulars" are in front.
July and August usually see a return to more social conditions save for Kenai closure days and times when the Kenai silver run sucks.
My advice / critique comes from a "regular" point of view and you won't neccesarliy see it practiced by everyone.
First off, if in the Traps - the hole above people's hole, if there are any substantial number of boats present, you shouldn't have been on anchor. Certain holes in the river are traditionally rowing / moving areas, others traditionally anchoring. The Traps is not one to anchor in in my book. You have dead water on either side of the main flow and can work up and down it and shouldn't block it off so everyone can make passes.
As to pulling your anchor, that's mandatory for everyone, but the two that pulled into where you were were wrong. Guides should be aware of what's going on around them and if you pulled out to let someone through with a fish, they should have let you slide right back in ... let 'em know it next time. Sometimes you need to be a little vocal
Now, to the second part ... if you had dropped the hook on my lines, you probably would have heard it from me too. Anchored boats are "rocks" to be rowed around if you're MOVING, but etiquette says you don't drop right in front of an anchored boat and drop your own, give 'em some room ... sometimes you have learn some new spots or sacfrice the best one for the sake of some civility. A good rule of thumb is to ask yourself if you're going to affect their fishing, don't do it.
Don't mean to jump on you on the last one, but it's done way too often ... but you'll never see me do it to you!
Good luck down there ... if weather stays calm and Kenai doesn't cloud up too much, it should be a little calmer!