Estoping or Estopping: How To spell?

The word Estoping is misspelled against Estopping, which is present continuous of "Estop"

Estopping has double "pp" is mispronounced as "p"
Remember double 'PP' in between the strings esto & ing which should not be misspelled with single 'P'
Wrong Spelling: esto-p-ing
Correct Spelling: esto-pp-ing
Find more incorrect spellings of Estopping to spell right way.