Thanks JM for your feedback.
My other gears as follows:-
JP Slalom 112L 68cm for 8.4m
JP Slalom 102L 66cm for 6.3m 7.0m 7.6m
JP Slalom 81L 56cm for 5.5m 5.9m
For 117L 80cm, mainly used with 8.4m and 9.2m TR9, what Fin is suitable?
Considering Z -S 44cm and 46cm -> quite high price......
or T43 44cm and 46cm -> used from 30cm to 42cm for other board, quite lovely speed indeed...but comparing to Carbon fin... weight more.....
any comment about the fin selection? Thanks