V/STOL Concepts & Developed Aircraft, A Historic Report, Vol. 1  Wendell Moore flying the pressurized hose version of the first jetpack, 1957. Notice the Y split and the centering over the body side center line.  Support for lifting the body is padded loops under the arm pits, independently swiveling nozzles that have counterweight stabilization built in.

V-STOL Concepts and Developed Aircraft AFWALTR86-3071volume01-69

 

V-STOL Concepts and Developed Aircraft AFWALTR86-3071-Contrails-73