Thank you for the replies. I take your point Ola, that an extra laminate will help spread the shock loading from the mast foot. While flat landings need to be avoided, unfortunately, us intermediates are sometimes caught out. As you say, all else being equal, a thicker board will be more resistant. I'm still using an original Evo 74, [amongst others], so it would be more sensible for me to replace it with a newer version of the same. Once again thank's.