Topband: Elevated Radials - will radials on ground help?

[dan at np2j.com]

Hello fellow Topbanders!

Had lots of fun in the Stew, thanks for the contacts everyone!

Looking forward to the CQ160 and as always trying to find a way to 
improve antenna performance.... so looking for advice

I am currently using a pair of Inverted L's each having a single 
elevated radial.
The feedpoint's and elevated radials are 10-12 feet above ground.
The soil is fairly rocky.
Also quite a bit of "Bush" growing fairly high except below elevated 
radials where I have trimmed back the bush.

I am wondering if I should lay radials on the ground, particulary near 
the feedpoint's?
Any advice??

73
Dan K8RF/NP2J