Jim; Welcome to Montgomery World! Good to have another Midwesterner on board! The photos of your project look impressive!, I hope it works out for you. The splashing from wave action in the M-15 was initially a surprise for us. To keep feet dry on board especially when sailing in cool weather we laid a rubber grid mat about 1/2 inch thick. No great engineer feat like what you propose, but it worked for us. Martha Ekwurtzel '01 M-15 "Knot Head" Oak Park Illinois Edgerton, Wisconsin -----Original Message----- From: Jim Dahlquist <jimdahlquist@gmail.com> To: montgomery_boats <montgomery_boats@mailman.xmission.com> Sent: Tue, Oct 23, 2012 11:29 pm Subject: M_Boats: Check valve drain for a Montgomery 15 I am a new owner of a 1994 Montgomery 15 for about 4 months now. Right now I am trying to install a home made check valve in the cockpit drain to block water trying to enter due to wave action. This also requires a pvc pipe for the centerboard rope. I have some "G/flex 650" that I think should be ok. Any ideas on how to get the two parts mounted and fully wetted by the epoxy while keeping it from dripping excessively into the CB trunk will be appreciated. I tested the valve. It seems ok. I made it from concentric polycarbonate cylinders. Also, the seal and ball are removable or replaceable from the top as instaled. The checkvalve has an ID of 0.875 inches and could accept a rubber or cork plug. There are some project photos linked below. The present plan has a smaller rope pipe fitting than shown in the view 1. Thanks, Jim Dahlquist jim@dhlqst.com Palatine, IL 847-341-0086 https://dl.dropbox.com/u/28005645/CkVlv1Assy.JPG https://dl.dropbox.com/u/28005645/CkVlv2Hole.JPG https://dl.dropbox.com/u/28005645/CkVlv3Hole-PipeHole.JPG https://dl.dropbox.com/u/28005645/CheckValve01.jpg