The long standing but heretofore unfulfilled need for {HEAD ~ an improved watercraft propulsion system} that fulfills the identified needs is now met by {TAIL ~ a new, useful, and nonobvious invention} 
The long standing but heretofore unfulfilled need for { HEAD ~ an improved watercraft propulsion system } that fulfills the identified needs is now met by { TAIL ~ a new , useful , and nonobvious invention }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL