Topband: More radial questions

[Bill Axelrod]

There always seems to be more questions than answers or even opinions when 
it comes to radials.  Here's mine:

I live on the side of a mountain.  The flattest land, which is where my 
antennas are, is at about a 20 degree slope.  For my 160 Meter vertical that 
means I can easily put quarter wavelength radials on the ground to the 
North, East, and South.  But to the West I can only go 30 to 60 feet before 
reaching a very steep drop off over about a 60 degree arc.

Question:  Is there any value in using quarter wavelength  size radials in 
the southernly direction once they hit the very steep drop off or would I do 
just as well using 30 to 60 foot radials ending at the steep drop off?

Thanks and 73...   Bill K3WA