Richard,

The radial kit twinlead  wires are too flimsy to  support anything and the 
string  at the end only holds up the radial itself.   In fact after having 
one wire brake I  redid them all by running  mason's line the whole length. 
I made some loops in the line every few feet and tied one end to the base of 
the antenna and the other end to whatever support  was out in the yard. 
Attached 1 end of the wire to the  lug on the antenna and  fed the other end 
through the loops.   No strain on the radial itself, and no more broken 
wires.

 I never guyed mine, but Butternut has  some things to say on the subject:

1.  Guying can improve antenna life, but improper guying can reduce life.

2.  Don't use nylon for guys, it's too strechy.   If I were going to guy, 
I'd use  the black dacron stuff.

3.  Only attach guys just above the 30 meter coil, which is about 8 feet up. 
Any higher and the aluminum is too light and the antenna will snap at that 
point.

4.  Guys  should have some slack and  not be at too steep an angle.     If 
the guys are set taut, they will produce downward force on the  lower 
portion of the antenna and the aluminum  will fail at some point.   You just 
want to keep it from whipping around in the wind and not try to hold it 
rigid.  If the guy angles are too steep, you will get the same  downward 
forceand possible failure  in high winds.


I know you have had verticals fail and are looking  for a better system. 
hope the above is of some help to you.

73, Steve KW3A