In fact, my solution doesn't even need the ballooner.
It needs no precision, only some quite exact timing once.
Actually I thought first I'd need the ballooner, not too accurately but for a long time in the air at a certain position while doing some other things, which was made a lot harder due to the impossibility of getting the wind icon after unpausing. But looking at the skill bar I noticed a very easy way to avoid that.
I wouldn't call it a glitch used, it's just an intended feature acting a little unexpectedly.