Why not use the sail with slides? You could still wrap the sail around the mast for storage. Then you have the option of adding a halyard and reef points at a later date.
I lived in Boca Raton until 1982. I remember a storm in 1978 that rained somewhere around 18" in 1 day. Our whole neighborhood was flooded. Fortunately we didn't get any water in our house. There was about 2 feet of water in the street in front of our house, I was able to snorkel in it. We rowed a small homemade boat all around the neighborhood.
I'm not sure why but I couldn't embed the link when I was logged in using Internet Explorer. I was able to do so with Chrome. I first found your video on youtube and copied the URL. I then typed my post and highlighted the "sailing with dolphins" text. I clicked on the link icon (the icon with a picture of a few links of chain). I pasted the URL in the appropriate field in the dialog box and then clicked OK. That's it.
Thanks for posting your video.
-Mike
If you can guarantee that there will never be even the slightest break in the epoxy barrier then you might have a point. But I certainly wouldn't count on it. I think it also matters how deep the fastener is buried. I've had screws that worked a bit over time and cracked the epoxy covering them. Admittedly the epoxy layer was pretty thin. If these screws had been plain steel they would have rusted immediately.
You could get rid of the horn completely by using a weighted centerboard. There would only be an uphaul line, the board is lowered simply by easing the uphaul.
Here is the Blue Peter website, http://www.teamturpin.org/john/lapwing3.htm
The builder did a nice job but ended up selling the boat after only sailing it for a short time.
A fellow who used to post regularly on this forum made this same modification to his CS20. Here is his web page where he describes his work: http://www.roguepaddler.com/cs20p.htm
Alan, thanks for posting the video of the CS20 mk III. Do you know the approximate wind speed when this video was shot? Do you know if the ballast tank was full?