The *biggest* issue with Jungling in 3's is when your team doesn't know how to "receive" a gank. My team recently had me stop jungling because their play style won't allow for me to jungle. Our top lane generally pushes really hard, and so there isn't a secured kill, as they will be able to just sit on their tower, and our bot lane gets zoned so much that they fall behind on CS and falls off late game. Is this a jungle problem? Kind of, I know that Shyv's lack of hard CC makes her a relatively weak early gank, and because I can "flash/jump" over walls means that the ganks are relatively easy to predict, however, if you have a jungler on your team you MUST ensure that you put your lane into a position to RECEIVE a gank. If you push, then don't complain about ganks. If you let your jungler gank, and you control red/dragon, your team WILL win every time, unless you guys throw hard.