Comparing 2 boards

These two are a long way apart on volume, so they are not really alternatives to each other.

Channel Islands Twin Fin

Twin Fin

Channel Islands

Length
5'3"–6'3"
Volume
22.6–34L
Shape
twin fin
Fin setup
Twin
Video
3 clips
Big Sun TWIN PIN MIDLENGTH

TWIN PIN MIDLENGTH

Big Sun

Length
6'6"–8'0"
Volume
46L
Shape
funboard
Fin setup
Twin
Video
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Up to 4 boards at a time. Volume and length are the shaper's published ranges across all sizes of the model, not a single board.