DRAGONFLY Trimarans User Forum

At least on DF 35 it seems pretty easy - lash them to the folding preventer lines that are hooked from the bow to the eyebolts on the outside of front beams, and the other corner to the lifting eye. Just not sure what would be the use. Maybe allows to drop the downwind sail without worrying of missing the main hull deck? Or make spinnaker sheets less likely to drop in the water.

Any other use?

It is for crew safety. A net might interfere with the anchor rode depending on the angle of pull and position of cleat.

There's a similar project on the agenda for our boat. In this case it's to keep the wife interested in sailing with small kids (ours)-she was worried about the possibility of an unscheduled swim session.