Can someone please tell me what each of these are used for and what depth they go to?
Basically these are all in the "swimbait" category. As the name suggest, they imitate a bait that is swimming as all bait that is not artificial does, they swim.
You , sir, are to be commended on your excellent discussion of lures. Nothing in your response could be considered 'talking down' to the person that asked. It is why I come to this site, to listen and to learn. I've been around (I am 72) a while and have learned you 'never stop learning'. You can be proud of yourself in the way you imparted your knowledge to others in a very easygoing 'mayberry' way.
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