Sluging or Slugging: How To spell?
The word Sluging is misspelled against Slugging, which is present continuous of "Slug"
Slugging has double "gg" is mispronounced as "g"Remember double 'GG' in between the strings slu & ing which should not be misspelled with single 'G'
Wrong Spelling:  slu-g-ing  Correct Spelling:  slu-gg-ing 
Check more misspelled words of Slugging to spell it correct.