Use to use curly tails almost exclusively for smallmouths back 30+ years ago. And back then I was told that on a straight retrieve, it's "better" (notice I didn't say best) to run with the curly going in the same direction as the hook bend. And if you're fishing an on/off bottom retrieve, the opposite is the way to go. I"ve always adhered to this philosophy. Which is correct or incorrect? Simple. Let the fish tell you what they want, not any human!
(And btw, for what it's worth, I've rarely ever had the tail hang on the hook during a steady retrieve.)
"A voyage in search of knowledge need never abandon the spirit of adventure."