Why would someone remove a supposed rifle from said blanket and then leave or re-tie the blanket with said string...carefully leaving said protrusions intact?
The Warren Report:
About 3 hours after the assassination, a detective and deputy sheriff
saw the blanket-roll, tied with a string, lying on the floor of the Paines'
garage. Each man testified that he thought he could detect the outline
of a rifle in the blanket, even though the blanket was empty.
Paul M. Stombaugh, of the FBI Laboratory, examined the blanket
and discovered a bulge approximately 10 inches long midway in the
blanket.
This is suspect. Ruth Paine stood on the blanket (itself an oddity that was never explained) when Marina pointed to it so any bulge should have been flattened. There was no time to see any bulge.