Good advice.
For the record, I installed plugs on my cuddy drains, same as on the transom. The mast tabernacle is sealed with rubber marine hatch tape. The through-hull for the CB uphaul is sealed when the boat is underway. So I'm pretty sure the only source of water in cuddy between trips is through the open-cell foam weatherstripping. I'm drying out in Arizona on travel for work right now, but I understand it's pouring back home in Oregon. So I'll have a chance to check it out this week. The boat was dry when I put it away on Friday.