Allowing the water to reach the Bilge compartment is a good way to know if there is a leak.
In my case I had sea water coming in from the exhaust water trap-ment box it was a fine mist, thing is i was only aware of a leak when sea water arrived in the bilge by the keel bolts, Imagine my concern! It did wake me up to the leak which I found and fixed, however, water was arriving in the blige for weeks every time the boat had been out and rocking and rolling.
Allowing the water to get there (the lowest part of the boat) is something I would want as a good sign of any problems.