It's not uncommon for air mattresses to leak along a seam. When this happens, repair kits are pretty much useless.
What is an effective way to repair a leak in an air mattress when the leak is along a seam?
If curing is involved, the curing will ideally take no more than a couple hours.
Also, ideally, the mattress would not need to be deflated for the repair to proceed. But that's just an ideal preference, and not a requirement for this QA.