Do you have a 7', or longer, medium action spinning rod for trout? If so, I see no reason that it wouldn't work to catch some summer steelies. And if that rod n' reel has at least 8 pound test line...you're all set. Then, all you would need to buy would be the tackle and bait--which would NOT be a huge investment at all.
Float and jigs is an effective method; as is drifting a worm w/ corkie (or puffball). Spinners also work well.
I'll defer the rest, to the more experienced chaps.