Bottopping or Boottopping: How To spell?
The word Bottopping is misspelled against Boottopping, a noun meaning "Sheathing a vessel with planking over felt."
Boottopping has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings b & ttopping which should not be misspelled with single 'O'
Wrong Spelling:  b-o-ttopping  Correct Spelling:  b-oo-ttopping 
Find more incorrect spellings of Boottopping to spell right way.