Thanks Phil…that clears up a lot of confusion. A question though…on the YMS hull the keel post is quite narrow and can’t accommodate the standard Ronstan ball swivel base to which the length of ss tubing and mainsheet ratchet block is traditionally attached. Is there anything in the rules to prevent attaching slightly wider timber block underneath (as one might do with a wedge beneath a cam cleat) in order to mount the swivel base on the keel? Otherwise it would be a matter of having a non standard base machined up somehow, or using dyneema and struts which seems rather cumbersome.
Cheers,
Andy Mac
1771