Tuning of Slalom XL boards (iS 133 etc)
 

Just to be used as a reference being aware of the large span of personal preferences:

I wonder what you consider to be the best trim on the iSonic 133 or slalom XL boards in general in normal 10-16 knots conditions paired with sail of approx 9 sqm?

Boom height ?
Harness lines length?
Mast track position?

Thanks !