Hi, new member here.

I recently purchased a Nacra 18 sq. and have noticed on some videos that there are people running set-ups without link arms between the cross-beams. I am wondering how it is possible to run a set-up such as this, given that the front cross-beam, it seems, would be free to rotate.

Also, I would like to make my own fins and was curious to know if there are some models available that I could use as a guideline. I'm sorry if some of the terms I used aren't quite clear, I am from Quebec and there doesn't seem to be a good translator available for technical terms.

Thanks in advance to anyone who can provide help.