The system includes {HEAD ~ a first member} such as a header for {TAIL ~ attachment} to the boat 
The system includes { HEAD ~ a first member } such as a header for { TAIL ~ attachment } to the boat
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH