My son is a pretty heavy wetter. A few weeks ago, he started rolling over to sleep on his tummy at night, and we started to get serious leaking diapers every night. He is 7 months, and we don't usually change him at night because it really wakes him up. We use cloth during the day.

Here is what we have tried so far:
Pampers Cruisers size 3: leaks
Pampers Baby Dry size 4: leaks (he is about 22 lbs, just big enough for size 4s)
Bum Genius OS pocket with a regular insert and 2 hemp inserts: leaks
Huggies Overnights size 4: leaks a little
Pampers size 3 with a Huggies Overnight size 4s on top: leaks
Huggies Overnight with a hemp insert: this cloth/disposable combo seemed to work, but we changed him in the middle of the night because he was up anyway.

Does anyone have any tips? I am really running out of ideas.