I decided that on jungle amumu is was more effective to max out Q (Bandage Toss) then lvl up his E (Tantrum). My reasoning is that jungling is pretty easy after you put 2 ranks in your E and when ganking nobody is going to attack you (reducing E cooldown) or going to stand next to you for most than 6 seconds. Maxing Q allows me to maybe get two stuns off in one gank.

However, I have found that I almost always out of mana after ganks because of Bandage Toss's 100 mana cost.

My question is: Is this skill leveling effective/efficient? If so, how do I counter mana problems? Is there a better way to use Tantrum in ganks?

Thanks for your help!