Ken: The eyes are old, but not so old as to misidentify a gator. Someone corrected me and said it was probably a "cayman". Whatever that is. But it was about 4 feet long and was looking right up at me when it grabbed the duck. Yes, I was definitely surprised.
I have overnighted on the willamette waterfront many times. It used to be a lot of fun during Rose Festival, but now they have it all bottled up on the water because of the fleet and the security requirements. Riverplace is a great place to tie up, and there is an informal anchorage just to the north of the city docks, on the west side of the river. There are now new docks on the east side as well, but they sit right under the bridges and have to be incredibly noisy. Riverplace is just a great place to spend a night or two. Lots of restaraunts, galleries, shops, theatres. Just about everything can be had within about a 4 block radius, plus you can jump on the trolley or the lightrail and go all over the metro area for $2.00 or so. Including out north to the Expo, or the marinas which are just East of Expo. Or the lightrail can take you to and from the airport, which is really convenient. Another good draw is the saturday market, about 300 yards north of the city docks.