Does anyone know what spec aluminium should be used for a spinni pole and boom?

I'm specifically looking for the 60xx number for Nacra F18 spinni pole, and a Spitfire spinni pole & boom (appears to be the same tube is used for both, certainly in diameter and thickness).

I've identified a supplier of 6082T6, 16swg, 1.5" OD, anodised. Another has mentioned 6063T6. Should I give a damn?

This is for myself and a few mates with a mix of boats as above, who are finding breakages expensive!

Thanks, Simon