Derstalker or Deerstalker: How To spell?
The word Derstalker is misspelled against Deerstalker, a noun meaning "One who practices deerstalking."
Deerstalker has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings D & rstalker which should not be misspelled with single 'E'
Wrong Spelling:  D-e-rstalker  Correct Spelling:  D-ee-rstalker 
Explore spell check of Deerstalker to spell without errors.