Elkhorn has monster smallmouth (5+ pounds), channel catfish, redeye bass, perch not to mention big as* bluegill.

The big smalls are best caught wading. even if you are in a canoe or (what I use a plastic coleman crawdad) small jon, get out of the boat in front of or below rapids and throw medium diving cranks or rooster tail into the rapid. For live bait use a nightcrawler right into the rapid and let it free float in the rapid. The strike in the rapid will be very fast and be ready they will let go just as fast. Deep channels with good current also are great spots. Try to throw upstream to the bank (while you are chest deep in the middle) so the bait is presented coming from the bank at an angle downstream. When the bass are slow late morning, afternoon target the redeyes with redworms, small spinners, curley tail plastics off rocky points and shores (you will also land a few really big bluegill). The channel cats are caught with nightcrawlers slowly pulled on the bottom in the same areas the smalls like (moderately fast channels, deep holes). Keep the nightcrawlers moving, don't think that if it sits there long enough something will eat it. No bite in 5 min? MOVE!! to another spot.

Fishing Elkhorn (fishing in general) is more hunting than most people realize.