Mike- I had good luck with just inserting an appropriate aluminum tube the right diameter into the inner end of my CF windsurfer mast spin pole. As stated- its all compression. Nothing broke despite running scary fast Wild Thing with the chute up in distance races.
Dacarls:
A-class USA 196, USA 21, H18, H16
"Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison
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