I think I had a brilliant plan to build an anchor box into the port seat behind B4. I'd build a deep box that went all the way down to the hull bottom and would be wide enough for a flat fluke anchor and the rode. I'd cut the seat top just like over the centerboard.
When I was in West Marine, I forgot to measure the fluke anchor they have. According to this page, I think the 19" shaft will be too long. I'll need to find something smaller. Maybe I can put in a small hatch on seat and then use a mushroom anchor.
I'll keep watching other builds to see what they do.
Other builds that are well journaled: