This fly will not look like your plastic lure, but, I would give it a try. It is a very good LMB/SMB fly. You could play with the colors to match your lure.
Go to the menu on the left and click on Fly Tying and then in the Search Window type in "Pig Boat Fly". It was a FOTW and a good one.
Hopefully, it will do the job for you.
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Warren
Warren
Fly fishing and fly tying are two things that I do, and when I am doing them, they are the only 2 things I think about. They clear my mind.