Dr. Slick wrote:
"Can I get away without using the tnductive loops?"

A similar "Super-J" is shown in the 19th edition of the "ARRL Antenna
Book" on page 16-25. I see no mention of decoupling the outside of the
coax.

Exterior coiling and exterior coupling of the coax should hardly affect
the interior of the coax.

W2DU ferrite cores could be used for the same purpose as coils in the
coax as could other decouplers such as sleeves, etc.

Melted foam inside the coax might indicate a near short nearby.

Load on the coax should be a resistance of Zo value and if so, there
should be no high-current hot spot.

Best regards, Richard Harrison, KB5WZI