[TowerTalk] Vertical insulated base material question

[RLVZ at aol.com]

Hi Guys,
 
I'm building an 80m. 1/4 Vertical using a tapered Aluminum 32' tower  at 
the base and telescoping aluminum tubing on the top to achieve a 67'  length.  
It will be lightweight and probably self-supporting up  to 40-50mph but for 
safety I'll guy the tower at the 30' level with  non-conductive guy lines.
 
I'd like this to be an "insulated base" tower and am wondering if I could  
attach the base of the tower to treated 4"x4" wooden posts in cement and 
achieve  sufficient RF insulation from ground?  I plan to use stainless steel  
bolts to attach the base of the tower to the 4" treated wooden posts.   
Please advise if you have any first hand experience using wood or treated wood  
as the insulated base of a Vertical?  Or if no first hand experience, do  
you believe wood will give adequate RF isolation from earth?
 
Thanks & 73,
 
Dick- K9OM