I've feed trained most of my fish by first getting them to relate food to me... They see me and know it is feeding time. First they are fed what they really like, small minnows, worms, etc... Then after a couple months of this, I switch to freeze dried feed. The fish may reject this at first, but with a little hunger they'll except it. Last, you switch from freeze dried food to pellets. Again, they may initially reject them but eventually if hungry they'll take it. This has worked for with with the easy to train like BG and GSF, harder to train like black bass and even harder to train like crappies. Walleyes and pickerel, well never did figure them out.