You are going to skin paint a vinyl balloon filled with helium? So I turn
it on for ten minutes and then off for ten. By that time it has drifted a
few miles. Try spotting a balloon that only has to lift about five pounds
at a quarter mile, much less a couple of miles.

Sorry, no "probably" allowed. Neither helium nor vinyl absorb enough power
to be popped by anything other than a direct hit.

Jim

--
"If you think you can, or think you can't, you're right."
--Henry Ford



Any given EW aircraft in the USAF fleet to narrow localize and an AWACs
that'll get a skin paint on the balloon. They could probably pump enough
energy through the radar to pop the balloon.