Basic rules of repairs. Don't apply a patch over a join in the fabric, as the leak will just move a long the join and leak further along.
I'm not sure exactly where the air bubble is - in relation to the fabric join. If it is away from the join, then apply a small round patch over the hole with a locally supplied adhesive.
If the leak is on the join, then the air is escaping at the weakest point. Usually you would then open up the seam and perform a more comprehensive repair.
If the holes are fish hook size or smaller then a small 1" patch should suffice. Dry the area off and mark the hole location with a pen. Apply a patch with a suitable contact adhesive - with the tubes deflated.
Australian Zodiac Repairer