Personally, I have 5 dogs,two of which can get bored/frustrated and begin barking frantically at our one section of wood fence, this behavior is accompanied by pacing and in one case screaching (only when the yearling gets worked up to that point).
I've managed to lessen the behavior by calling both girls toward me as I run to the other side of the yard, when I have their attention I will redirectthem with some obedience practice or a toy, my girls are very athletic so this can mean anything from leaping shoulder hieght to snatch a toy (the older brat has good aim so she is the only one allowed to do this), playing tug of war or tag, or practicing short stays while I throw in their release word as I ramble and slowly walk away.
If one girl runs back to the fence and the other stays I ignore the deviator until she returns (and why wouldn't she, the other girl gets to play with mom, a high value reward for some). If you can't find a trainer, be creative and focus on what you do want them to do as opposed to what you don't want them to do.