[TowerTalk] Earth Anchors

[WK6F]

I'm planning on using earth anchors for 100 feet of Rohn 25.  The soil 
at my place is pretty hard and somewhat rocky.  I'm thinking that 
regular earth anchors (screw in type) are going to be difficult to 
install, especially for one person.

I've seen two other types:  duck-bill and something that looks like an 
arrowhead.  Both are simply driven in using a long rod, and then the 
attaching cable is pulled.  This "sets" the anchor.  Looks interesting.

Anyone using these?  They have sizes that claim to have comparable pull 
strengths (4000 - 6000 lbs.) to regular anchors.  Seems like an easier 
way to go..

Thanks for any comments.

Ken WK6F