C-22 Air Scoops
I do not think it is wise to substantially alter the fuel ventilation scoops on any boat.Such would be akin to altering the emissions equipment on your car.The manufacturer in accordance with Coast Guard regulations effective at the time of manufacture installs these devices. While they may produce some set backs, they have a required function to fulfill and must always be on the boat if such were required when the manufacturer made the boat. You could be fined for either changing or substantially altering these devices.As for the C-22 air scoops, if you have water getting in when you sail, you heeling too much and no longer sailing efficiently. You are probably going sideways as much forward. I believe racers do not like to heel past 20 degrees.Also, do not forget that there are just four bolts holding in the five hundred-pound swing keel. How much lateral force do you want to place on those bolts when you heel?Tp prevent rainwater from blowing into the C-22 scoops, as would occur on a mooring, you can stuff a tennis size ball into the forward facing scoop. Attach a string, so you can remove it.I personally cheat a little with these scoops on my C-22. I run the fuel line from my external tank throught the aft-facing scoop to my outboard. Probably not legal, but until I am officially told not to do so, I will continue to do so.However, I continue this cheating by also running the alternator output wire from my outboard throught the same aft-facing scoop. The way I figure it, that wire is going to go through the fuel compartment downward to the cabin bulkhead where the gas fumes collect anyway, so I do not think I am endangering myself to a greater extent. And that is why there is a long tube on the bow-facing scoop. It is to blow air into that part of the boat where gas fumes settle and help dissipate them back out the aft facing scoop.