Dad would dive across under the boom and whichever one of us was on the jib would go under the jibstay (since it was faster).
That’s the older version, it does not have the bow crosstube we used to switch hulls when coming about when we weren’t running the jib. Of course...
Was very hard to tack with the 10’ beam and minuscule jib.
My father and brothers and I had a B Lion in the mid and late 60s, I am very familiar with it. We used to race against Sherwaters and later...