said bottom section conforming generally to {TAIL ~ the shape} of {HEAD ~ the body board} and having a relatively smooth and slippery bottom surface 
said bottom section conforming generally to { TAIL ~ the shape } of { HEAD ~ the body board } and having a relatively smooth and slippery bottom surface
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH