I did some google searching yesterday - the plan says its 6metres - means nothing to a dunce like me
But there were a few similar looking if aged photo's of yachts. The keels of them it seems were lead ballast split into two halves and bolted/screwed to the keel. The keel itself instead of being bulb shaped as I have made mine by following the plan, is just a straight blade. The bulb shape being cast into the lead halves.
So I am considering doing the same, grind back the keel with the trusty angle grinder with a sanding disk in it, until it is blade shaped, and then cast some lead weights into the bulb shape and screw them in.
Another departure I have done yesterday/this morning is to plank the entire deck area with sheet balsa and then also cover that with resin and two coats of cloth. I now have a completely sealed hull with no way to get into it
I made sure the rudder post is in position if not cut flush at either end just yet. The intention is to cut out an access hatch which will be disguised as a recessed deck. The only reason to access the inside later on will be to secure the mast internally.
The reason I went this way was so that it is entirely waterproof as I can get it and will take the knocks it will have when kids are playing with it ( if it gets that far! ) I am also going to plank the deck with mahogany stripwood that I have had for many years, so it won't look like a solid lump of grp when its eventually finished.
I sat feeling smug this morning at the handiwork when it occurred to me that I have cocked up. Before glassing the deck I haven't installed securing plates for the mast stays, fore and aft and p&s! Another problem to ponder
You'll have to forgive the temorary stand, never having built something with a keel before, until I got to working on it I never gave a thought to the keel sticking downwards. So its in my vice for now