I agree with Numbskull, 4 tubes worn on a belt is likely going to be too bulky. I use either my 3 tube Commando or 4 tube cube Commando bag when weitsuiting. The 3 tube is the perfect wetsuiting size!
"Out there in the surf is where it's at, that's where the line gets drawn in the sand between those who talk fishing and those who live it."
- a wise man.