building a boat #1
What to do

This Rib Takes the Beating

This is the rib that I lean against and sit on, the backrest    
is hinged to the top so it flips up and becomes a higher    
seat. ( Of course when you sit up on top, you now have    
drastically changed the center of gravity and are likely    
to go in the drink.) That is why the rib has that flat top,    
it makes it easier to use small hinges. You will want to    
taper the ends of the flat top in order to keep the vinyl    
from tearing on the sharp corners. Simply round off both    
the inside and outside corners to a large smooth radius.    
This is handy when you want to sit up high in order to    
see better, or fish. Note the upright in the middle of the    
rib. The upright should be of sufficent width to hold your    
weight, so you don't break the rib. Also this picture    
shows the oak block better.