[Elecraft] HF Antennas for KX3 Hand-Held/Hiking/Portable?

[Chas H]

I am looking for HF antenna options (primarily 17m + 20m) that will work
for hand-held portable while hiking with my KX3.  Preferable something that
will connect directly to the BNC jack on the side of the radio.  I'll be
hiking for 6 days in Glacier National Park and looking for practical
antennas to use.

What are you using when you go HF hand-held?  Do you drag a counterpoise as
well?

Thanks + 73,
Charlie de K0CKH