View attachment 207821
This pic shows the underside of the traveller on the starboard side. The line is for the main traveller. The panel is Sunbrella and has snaps on the arch and zippered to both the bimini and transition panels.
View attachment 207822
I removed the panel and here you are looking at the upper side that faces the arch. There is a 3 sided rigid cloth tray that captures the rain and redirects it over the side. The zippered part obviously helps out doing that.
I admit it is somewhat difficult to see without being here in person. But the idea is to capture the water under the arch in the tray on the horizontal part of the panel and redirect it over the side over the remain part of the zippered panel.
I am sure that is clear as mud.