Nice work! In response to your CB pendant attachment, I drilled a hole aft of the upper corner (in raised position), right into the centerline of the CB. Then Drilled a hole from side to side at the inner end of the first hole. This makes a "T" shaped set of holes. After you epoxy seal and finish the board, the pendant snakes its way through the CB case end log and into the "leg" of the T. When it hits the top of the T, grab a screw driver and push it out one side. Tie an overhand knot in it, trim the excess and then tug it back into the T. The size of the leg of the T should have a finished size a little bit larger diameter than the line. The top of the T needs to be bigger to accommodate the knot going into the CB. I don't recall being inventive about this, so look the plans over.
It works well to carve a little channel around the top of the CB where the line wraps around it. Make sure you line up your hole in the end log for good alignment. I got a piece of copper from the DIY store and flared the ends to use as a grommet inside the end log. Make sure you flare it well so there is no abrasion. I've already replaced that line once, and thereby tested the reversal of the knot out of the CB. Simple and works well.
And a tip for those of you with trailers that accommodate it - line up the boat so that the CB slot is over the bunk board. Then after the boat is on the trailer, lower the CB onto the padded bunk board. The trade off being the wear on the line as the boat is vibrated down the road versus the wear on the end of the CB. Note: don't just leave the line loose though, put it back in the cam cleat. One of our ilk had his CB drop for a nice multi-mile sanding down on the pavement.
Another tip: A few of us have drilled holes through the back ends of the skegs to run tie down lines through. I made mine nice and big so that it would be easy to re-epoxy and paint. I now have the bow eye and the loop through the skegs as the tie downs - no boards or belly straps! It turns out that had an additional benefit of allowing me to loop the line around the bunk board and through the hole twice, pinning the boat near the board so that my CB can't fall off the board.
Yes, there has been discussion of the drag induced by the holes. I've sailed many miles tack for tack with Dale's Luna. If there is any plus minus on any of the differences between our boats, I'll be damned if I can identify any speed differences. Sometimes he creeps by me, sometimes I creep by him. If racing is that important to you, you are working with the wrong boat. BTW, the best times sailing have been when we are going along 20 ft apart. It's more fun when I sail close enough to Dale for him to hand me a beer
Keep up the good work!
