Thanks for sharing. I'm all for trying things out for ourselves, to find out what works and what doesn't.
Alex mentioned osto-vents, which are little plastic devices, designed to overcome this problem of ballooning. They are probably worth asking your supplier for some samples, just to try.
Personally, I gave up on the 'small-stuff' years ago and now wear an irrigation sleeve at nights (folded up to form a huge 'bag), which allows for enormous amounts of gas and/or output to be passed with little or no problems being caused. During the day I wear a stoma plug instead of a bag, which, because of the porous material it is made of, allows the gas to escape easily without odour.
It certainly does appear to be about trial and error.
I don't know whether the plug would be suitable for those who do not irrigate, but it does seem to hold back a certain amount of hard output before it needs to be changed.