I created a dummy backstay by using the rope antenna (not affiliated with them). If you are handy you can make your own soft antenna. Use 3/8 line, leave about 4-5 of the core at the top of the antenna Icom recommends. Pull the core/center of the line on one end and attach 14 or 12 g wire to the core at the other end. Use wire ties or glue to make sure the wire does not slide down the line. In order to keep the line/antenna soft (not part of rigging) use a more elastic" line from bottom of antenna to the attachment point on the stern. The connection point from tuner to antenna is about 3 ft above the arch. Most recommend 23 ft of wire for antenna, you could use more but I would contact your local ham radio club to get other lengths appropriate for SSB and ham bands.
Do you have a ticket?