1. Lest we forget, Tony Stetzko's(sp) 73# bass in the surf was caught on a black feather fished in front of an eel. It was bulkier than your average fly but none the less the fish went for the smaller artificial as opposed to the larger natural.
2. In 1990 I fished extensively with black feather teasers. One particular night by the south side overlook I had in the neighborhood of fifty fish. The water was big with a very heavy sweep. The teaser probably oufished the 3 ounce bottle plug two to one and took the bigger fish.
3. As for doubleheaders the biggest pair I've caught was a pair of twenty pound fish. I honestly believe that two fish fighting cannot gnerate much leverage. On my end I felt the added weight , but not much pull. Two decent fish trying to pull directly opposite one another will probably beating they're tails together and not generating much force. Just an opinion, nothing I'd stake a lot of money on.
4. Big bait, big fish. Generally I'd have to agree, but think for a minute, blue whales are the largest creatures on earth, yet they feed on plankton and krill. I've seen documentaries where blue sharks are going wild feeding on krill. Bass are opportunists. They'll eat just about anything they can swallow and some things that they can't. I've seen em with skates in their bellies, definitely not gourmet diners. Some people fish exclusively for big fish and others just fish to catch. If you catch enough of them eventually you'll take some nice fish, and teasers will certainly increase your catch.
5. At one point this year the bass would come in real thick but seemed to develop lockjaw.Thousands of fished swimming and feeding shoulder to shoulder and most would not touch anything. It was frustrating. Being more than a litlle dense I neglected to try the teasers that I used so often in the early nineties. I dug one out a few weeks later, a little yellow and white buctail streamer a friend had tied up for me. I got a chance to use it one day when the fish were in around the rocks. Guys were catching, but not as frequently as the number of fish would indicate. I took ten fish before the school moved out. The closest guy on my right was about 75 feet away. He started to take notice as I had fish on four or five succesive casts. He was straining to see what I was using.I'll be stocking up on flies this winter.
6. The only thing I can add to the info that was given would be to tie up a few with leaders and keep them in your leader wallet. Put a loop in the end of the leader and you can interchange them easily, different size, different color, or just remove em when the choppers show up.