Cockpit Drains - On my 1979 I am considering installing a 1 1/2" through hull 
(vertically) at rear of cockpit floor just above the original drain (bottom of 
through hull would touch cockpit floor).  I chose this area to install because 
the cockpit floor dips to center rear of cockpit right at this area. I will 
then install another 1 1/2" through hull at transom (above waterline) but below 
cockpit floor so water will drain.  A hose connects these 2 through hulls and a 
one way Whaler check valve is installed inline between through hulls (to 
prevent seawater from entering cockpit).  This method is similar to new M17's 
except they have 2 drains/through hulls, one at each end of rear cockpit area; 
also mounted horizontally, also utilizing one way check valves.  

I believe this upgrade idea will greatly increase the volume and rate of which 
water is removed from cockpit.  It also removes a through hull that is below 
water line (original drain).

Thoughts??? 
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