"big boy now"
in reality the longer the wire the better.
But there is a down side the longer the wire the more you receive
including
interference. you could try useing an Antenna Tuner preselector...

Then how would you explain the performance equivalency of a 2Xwavelength
horizontal loop's performance to that of a 1/2wave dipole cut for same
frequency?
http://www.cebik.com/wire/horloop.html

The advantage of this type of loop is that it performs equally to a dipole
on
multiple frequencies. It is an excellent SWL antenna if you have the
real-estate.
Even a 1Xwavelength H-loop performs very well.