I don't suppose too many people will be surprised to see me suggest Ross Lillistone's Phoenix III design--a great boat that I've sailed lots of miles...
I think the people being fooled by the egg baskets and bananas puzzle are the ones who think it is ambiguous. Sure, there's some trickery there. But...
Not really a traditional rig in the (former) colonies, is it? But I like it a lot. It's still kind of a toss-up for me whether I like it better than...
The rig as drawn uses a sprit boom and so would be self-vanging, but unless I misunderstood something, the OP wants to replace the rig in the drawing...
Here's a riddle I like--sounds harder than it is, but most of my students give up because they aren't able to understand what question they are being...