I thought about it the other day after viewing your pictures of the your friends job.Looks like it could be tough getting concrete up behind the home.I was calling the baskets in the pics I posted "Gabions" but they are another brand ,very similiar.I'l remember the name after I log off tonight.They measure 3'x3'x12' having 4 seperate compartments in each basket.You can get them in different sizes & shapes but that is the most common one that I use.I remember they cost around $125 a piece not counting labor or riprap.As far as size of riprap ,I call it number 1.nothing bigger then say 8"x8".I usually just call the stone quarry and tell the dispatcher we are filling baskets ,dont bring me pumpkin size riprap.Here is a link thebig450es to the gabion website I am sure they have a supplyer near you. www.gabionbaskets.net