Balooning or Ballooning: How To spell?
The word Balooning is misspelled against Ballooning, a noun meaning "The art or practice of managing balloons or voyaging in them."
Ballooning has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings ba & ooning which should not be misspelled with single 'L'
Wrong Spelling:  ba-l-ooning  Correct Spelling:  ba-ll-ooning 
Find more incorrect spellings of Ballooning to spell right way.