It works for me most of the time. I have been doing this for a very long time and have helped me won many games in AB
I have many times capped the AB flag solo with mojo frog.
What you do is make a macro for
/target mojo
/kiss mojo
Now while capping the flag, or couple seconds before you tap flag you use the macro, and you can still cap flag while in frog form. Because your incredibly tiny and most alliance are clueless, you can usually cap the flag before they react.