I live in an apartment, and am trying to figure out the best way to mount my Klipsch RS-3 II surround speakers on the wall behind my couch. They have to be mounted on this wall as there are no walls to the sides and I can't have them on stands because of a little kiddo I have running around, but I can't find speaker mounts that will seem to work for these speakers. They have two screwhole type mounts in the back, but they don't hold the speaker to the wall and it moves side to side when used.. so I'm lost. My only other idea is possibly placing them on shelves mounted on the wall. Any ideas?