Topic: Plywood Decks.... Yeck
Oh yuck! I found a tiny bit o'wet when I rebed my bow pulpit. I let it dry out completely, and then re-drilled and epoxied and drilled a hole again...just like the book by Don Casey "Sailboat Hull and Deck Repair" tells you too. And yes, I will re-do it again next year, as the first time one does it, it is not a perfect job, as you are learning. I also re-caulk my chainplates at deck regularly, and pour acetone in first to chase water away from them...will rebed them in the next year during a major haulout...I agree, rebed often! Side Stanchions are easy, as there is no core there. But, pulpit & pushpit have no backing plates! Hard to believe! I use either a backing plate or large washers on each one. I do it all by myself, so it's tough with a backing plate, washers are easier to time and manage.
Good luck, pray for sun. I also put a bulb underneath with a yogurt dish on top of little holes to warm and dry them during our crappy weather here on the Wet Coast!