Olaf Jungle tips?

I really like Olaf in the jungle, and even laning him. This isn't a bitch thread, so I'm not going to complain about him but rather ask for tips for playing Jungle Olaf effectively. No, "Play another champ" isn't effective :P

So far I'm 4-1 with my current build styles, seen here http://matchhistory.na.leagueoflegends.com/en/#match-history/NA1/214397468?champion=2 (ignore the non-jungling games pre-november)

I try to adapt defenses and become the raid boss, usually it's pretty effective but what could I do better, or try?

What about laning Olaf? Usually I'll go Hydra, Bork, tank