Hi & thanks for all the feedback.
I am using a HD Stacker TV antenna bought from Denny's TV Antenna. It is attached to a tower about 25 feet tall.
http://www.dennysantennaservice.com
I am getting lots of Seattle stations at present: Komo (incl Comet & Grit TV), King (incl justice television), KCTS, KZJO, Q13 FOX, Antenna TV and KWDK (these are clear 95% of the time). I get several other stations occasionally. My house is on a hill, I estimate around 75 feet off the water and the antenna is another 25 feet high. I have clear line of sight to port Angeles. Initially when I installed the antenna it was just sitting on my deck but when I raised it up on the tower I got many more channels (so reception is very height sensitive). Maybe it just needs to be a bit higher to get KIRO - who knows?
Thanks for all your help & special thanks to Seattle for TV since Canada makes no effort to broadcast to my community.