Without a second thought... thin walled tubes, 3" - 4". I often pull every 2nd tentacle off or pull all of the tentacles off and dress it on an exposed hook jighead I've tied some marabou to. I'll try to give credit to the jig tier that turned me on to his "bou-tube" when my brain cycles through enough times to remember it.
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added: Paul.Jensen of Wisconsin was the tier that inspired me with his bou-tube tie.