well, I just went fishing for rainbows today and I caught 8. 3 of them were 4 lbs. +, so I know what I'm talking about.
I like to use ratsos or shrimpos tipped with a waxworm. On my second rod nearby, I like a plain nightcrawler.
Fish in 12-25 ft. of water. Jig the whole water column... for about 2 minutes near bottom, and work your way up in 3-4 ft. incremints jigging for 2 minutes at each one. Hopefully you have a vexilar because rainbows favorite zones are the 8-12 ft. suspenders, and the bottom, whatever depth that may be. I like to fish off of points mostly.
But I have decided that ratsos and shrimpos beat the brains out of anything for rainbows...Hang on!