Hackle flies, which are almost as good for bass as for trout, are tied without wings and the hackles (hair-like " legs ") are on the upper part of the body only. Palmer flies are similar but have the hackles the entire length of the body and are often finished off with a short red tail, which I believe adds to their attractiveness.
Trout flies tied on long shank hooks are often very effective when there is a hatch on but the hooks must be of good quality.
Snelled, Looped and Eyed Flies
I do not like snelled flies and intend to never use another one. My experience is that the snells give out before the fly, leaving an otherwise good, but useless,