It seems to me most sailors exaggerate the danger
of extra holes (properly installed through hulls) in the hull
. Structurally, you could have hundred through hulls without weakening the hull appreciably. If you use good quality fittings and above all ABA type hose clamps, failure is very unlikely. The only reason I closed off or reduced the size of few through hulls on my boat was to (possibly foolishly) reduce drag (I race
my Yankee 30). Otherwise, I like to have the intake through hull near to where the water
is needed. As someone mentioned, water
box solution would add a lot of hose runs.