Why the Dornier Do 335 is a poor carrier conversion

Could the Dornier Do 335 have been made carrier-capable?

Probably not successfully: its rear propeller, tail, arresting-hook problem, and landing loads make it a poor carrier conversion.

A carrier conversion must survive repeated deck operations as well as perform in the air. The Do 335's unusual rear propeller and tail leave little convenient space for arresting gear. A carrier approach would also demand a controlled-crash landing that stresses the airframe and undercarriage. Navalising the aircraft would therefore depend on geometry and structural strength as much as headline performance.