[CQ-Contest] Ground radials for Hy-Gain vertical???

[Jacob W Tennant]

Looking at adding radials to my Hy-Gain ground-mounted AV-18AVT antenna and 
was wondering what is the prefered way to do this as in is the use of 
insulated wire OK for the radials?  The radial setuo isn't going to be 
optimal as the space I have isn't big enough for a proper radial setup as 
they will be bent to fit my yard.


Mainly is insulated wire OK or must I use bare copper wire.