This may seem obvious but can't get a clear answer from Dr Google - any useful info is much appreciated

I recently purchased a Lost Round nose fish - a Twin Fin setup is recommended. It has 5 Fin boxes for FCS II.

I already have a set of Quads - Large FCS II Performer. And I'm not that keen on spending another $200 ish for A set of Fcs twin fins if they are the same shape/ specs as the quad fins.

1. Can I just use the 2 front fins from the quad fins. Or are they different alltogether

2. With 5 fin boxes - where would they be placed ideally?



My previous boards had fins glassed in - so New territory.

Cheers in advance for ay useful info!