First off Shacker welcome to Steelheadnotebook!

I to fish from the bank 98% of the time, very rarely do i get a chance to fish from a boat. Bank fishing requires a different approach than if you where in a boat. You want to look for good holding water, this can be broken into 3 categories: Depth, Structure and Current Velocity.
I like fishing water anywhere from 3-10 feet deep, the water has to have enough depth to it to make a steelhead feel secure. You can catch steelhead in water that is deeper and shallower, but most of the fish i take are from within that range.
Structure: Can consist of boulders, logs, riffles, ledges, depressions and channels. Steelhead will very rarely hold in structure that consists of just sand, sand irritates there gills. Instead look for water that has a rocky bottom, this could be made up of rocks that are the size of baseballs/basketballs to submerged/visible boulders.
Lastly, Current velocity. Water that is between a slow walking pace to jogging speed are a good bet. Remember steelhead aren't like salmon they prefer water that has some velocity to it, but they also don't like water that consists of extremely fast water. They want to get from point A to point B with the least amount of energy required to do so.
As for areas to look for, simply casting out your lure will most likely equal little to no success. You need to know/have a reason to cast where you are. Understanding where fish hold/why they hold there is hands down one of the most important factors for a successful outing.
And like the guys before me said, COVER WATER. They aren't salmon, they come by in the few... not in the thousands. Good luck out there, and i hope to see some fish porn in the near future from you.
Edit: If you haven't already, read the home page under techniques section
http://www.steelheadnotebook.net/techniques.htm. Brian goes into great detail and i am sure you will learn some stuff, i know i did. If there is anything else you want to know just ask, there is a great group of guys on here who will share info with you. Maybe next time i can get out on the river, i will take some pictures of good holding water and post a tutorial up.... since there isn't a lot of info in this category.