'Tiddlers' is correct for small fish - indeterminate species.What is the correct term? Tiddlers? Fry?
Surprised you couldn't catch on the Kopyto, have to admit I wouldn't use any of the others.These are what I've been using in the main, they look a sorry lot in the picture but great in the water...
The lighter is for scale although I'd probably do no worse on it if I attached a hook.
The Savage Gear ones are what I bought some time ago for jigging which I did have some degree of success with, by far the best i've done in terms of numbers on the dropshot has been on a real worm but again never anything big
Whenever I've tried in the past it's never been in conjunction with any feed.