All,

I have been using the same size boom diameter now in boats for more years than I need to recall, so far without breakages, except when skipper or crew decided that it looked a sof landing...then they bend.

Boom diameter, 50mm x 1.6mm wall thickness....I am presently playing with a newer version of the same theme and so far all looks good...at least on paper, biggest gain will be in weight saving along with some gain in strength.

I have always used a single hanger for the mainsheet system, end sheeting system with no failures due to the loadings.

Food for thought