Dear C Amos,
I came screaming back home from sea in on broad reach one windy afternoon, I had last been below to consult my chart plotter and all was dry below. I had been on deck for only about a half hour, when I went below to find my shoes floating around in the water that was sloshing around the cabin sole. I later replaced my bilge pump hose, installed an anti-siphon loop and plug etc. etc., but this phenomena occured once again to a lesser extent.
With one of my trusty nephews manning the tiller, I crawled down in the seat locker to discover that on a broad reach the considerable water that enters the lazarette through the OB well on a broad reach was sloshing high enough to send about a cup of water squirting through the electrical wire holes in the lazarette bulkhead at each slosh. I was lying below in the cockpit locker watching Old Faithful erupt every time the water in the lazarette locker sloshed. This story is further described in my earlier post on this thread.
You stated,
"Ariel Sprit’s lazarette only has a floor on one side, not all the way across like Faith. The holes for wires and the like were all pretty high up on the bulkhead so I doubt the water was coming in there."
The wire holes through the lazarette bulkhead on "Augustine" were very high up on th ebulkhead also, but that did not prohibit the filling of my bilge in an alarmingly short time. The opening had been taped, but all of that water was squeezing through nonetheless. I removed the ancient Loran antenna wire on the starboard side, and repaired the bulkhead with epoxy. I used a water tight through-bulkhead fitting on the port side navigation light wires. That stopped the leak.