[TowerTalk] Concrete Bin Blocks for Guy Anchors

[Ro Grrr]

I've been thinking about guy anchors for a tower I'll be putting up next spring. The tower will be 150 feet of Rohn 55 and it will require 3 triple guys.
Instead of poured concrete for the guy anchors I've been thinking about using some of those Concrete Bin Blocks which are 2'x2'x4'. I'd bury them and attach the guy ends to the steel loops imbedded into the blocks.
Does anyone have thoughts on them ?

RoGrrr
Roger
KC8HZ
Ohio