In the colorado river for trout I used those same eye grubs from tubes and tails and had excellent results... in november too! The fish, browns especially but some rainbows, were really wackin' em! Boy was it a lot of fun! They really liked it when i fished them extremely erratically and quickly across the bottom, but I got some hits that when I cast it out in a hole and let it sink they would hit it when it was dropping.