Re: Catastrophic tube failure...would it be a domino effect?
If you happen to be using a well inflated oldie undergoing ungluing issues, you could burst adjacent chamber's baffle too. On the other hand when you lose a tube, all remaining will deflate a bit. Plainly in agreement with Incoop about inflating a flat sib carefully and evenly in small air increments on a merry go round on all tubes. Like the 0.5 psi small increments in each chamber untill you are at 3.0/3.5 psi. Less stress on internal baffles once sib is top inflated as all tubes will be sharing very near equal pressures.
If you like to play being Rambo, get these, comes in different sizes, first one designed for bullets, arrows, spears, you can insert one if you still happen to be alive and sib is not a already a strainer, the second one is for cuts, small fabric abrassions, easy to install as there is a hinge to position correctly once inside tube, both works well, can turn your awful day saving nicely your boating day.
Happy Boating