I've only ever done AABB in iambic tetrameter. I just have a really hard time counting stress on syllables...
Hourglass
Forever flow its sands of gold
It weaves a thread—a silent oath
For all it sees is crystal clear
No end in sight—it knows no fear.
A mirrored shine of distant past
A line of sand—its shadows cast
It carries on as we grow old
Through ages past, and times untold.
Accidently wrote a slant rhyme (gold/oath)

I'd love to give "western" style Japanese poetry a try at some point. I really like
中原中也's style. Don't think my Japanese is good enough for that yet though

On the other hand I find Haiku very easy to write.