I run a Sonicwake with a dual rudder pickup and have been wondering if the cooling runs low on water pressure when the rudder is used during a turn. Wouldn't there be negative pressure on the side of the rudder without the holes? Or I am completely over thinking this concept!
What I'm trying to figure out is...what is the most effective, not efficient, way to use water for cooling? Rudder/hull pickup/exterior pickup...

thanks!