Pee'd out of a disposable!

[crunchyNurseMommy]

My son is a heavy heavy wetter! At home I set the timer & he can pee every 20-39 minutes (more frequently in the morning).
At church child care his class is about 2 hours long & he was leaking out of every cloth diaper I sent him in. So I switched to disposables because I was tired of wet pants. Well today he leaked out of a pull-up disposable!!!
Argh! I am at a loss for what to do? Planning to just pack pants from now on! (I will say, I am relieved it wasn't just the cloth we are using!)