the rock islands up the willamette is tyhe rock island slough according to google earth, ive gone there a bunch of times this summer and didn't get diddly but i am a bank fisher too and i did see a guy in a bass boat get a lil largemouth out of one of the slots and my fishing buddy just happened to get a pike with a white beetle spin he had, i didn't have anything white and was focusing on the bigger fish so i didn't get squat but as far as the white in the willy goes thats what ive hear a lot too.
as far as fishing close to oregon city, if you go along the 99 or whatever it is right there basically mcloughlin and go across the street from fishermans theres a mcdonalds and the entrance to clackemette park, go just past the park entrance under the overpass and there will be another entrance with a gate that is ALWAYS open you can drive into that entrance and theres a little parking area (very little ) that you can park at and you will be in the corner of the clackamette park lagoon or sheriifs pond whatever you want to call it, we call it the "O" hole since its so close to OC, i throw worms there predominantly and i ALWAYS catch fish, most of the time theyre small but i have pulled a roughly 10lb cat out of there a few weeks ago at night.
while the water is low the enitire hole is bank accessable but during the winter it gets a lil harder to find good enough bank spots.
if you go there and park in that spot or along the road right there you will see the cover that i have been fishing and if you know anything about bass youll immediatly think theyre there, and they are
good luck wildeye maybe ill see you out there sometime.
i live really close to that spot so anytime you want to go and need a buddy shoot me a direct message on here and ill show up. ill fish anywhere anytime in any type of weather (although i hate fishing in the wind) lol
-callaway