Matt: I saw your note, stomped outside to verify for myself that "this guy doesn't know what he's talking about," and sure enough found the drain in the transom. Feeling chagrined at this moment.
For the benefit of anyone else reading this thread:
I had consulted a manual that I found online and there was no hull drain hole as shown next to the cockpit drain (which definitely had me stumped). When I went out this morning, muttering to myself that there was definitely no hole in the transom, I spotted the drain hole way up at the top of the transom, port side. It is hidden from view under the lip of the deck. Definitely an odd location for a drain, but when I stood the boat up on end water started draining out. Eureka!
Thank you, Matt!