I also use my backstay as a HF antenna. It has two insulators and six PVC pipe standoffs below the lower insulator. The insulators are just visible in the photo in post 7. Maybe I should explain how I raise the sail. That would add to the description of the setup that is below the photo.
The sail is tacked to the stern rail with two short pieces of 3/8" line; one to the top of the stern rail to port and one to the outboard motor bracket on the rail to starboard. It is hoisted on the main halyard. The clew sheet is run forward to the staysail lead block then back to the port side cabin top winch. There are two jib hanks on the sail; one at the head and one at the tack. They are clipped to the backstay. Tacking the sail to the stern rail solves some interference problems with the HF antenna lead-in wire and its standoffs that run along the lower part of the backstay and takes some load off the backstay.
1. I take down the US flag. It is attached to the backstay above the lower insulator and can not be there when the sail is raised. In high winds I take it down anyway. The racket adds to the general emotional stress. (I put it back up for the picture just to get a little red in the photo.)
2. I bring the main halyard back to the stern and clip it there.
3. I take the bagged sail (with its sheet and its two tack lines permanently attached) to the stern rail and tie the two tack lines to the top of the center most port stern rail stanchion and to the outboard motor mount at the starboard stanchion. The lines are marked so I get the lengths right.
4. I run the sheet over the top of the bimini to the port staysail lead block and back to the port cabin top winch. The sheet is extra long and can reach from the winch to the riding sail clew when the sail is flying like a flag behind the boat.
5. I attach the main halyard to the sail's head and, while standing on the seat that I have on my stern rail, clip the hank at the sail's head to the backstay above the lower insulator. (At this point the sail comes out of the bag, and all hell breaks lose.)
6. I tighten the halyard leaving the sail flapping behind the boat. (It makes a lot of noise, and the BBQ grill is at risk of being wrapped if I did not get the sheet the right length to keep it above the bimini.)
7. I tighten the sheet pulling the sail forward to its normal position.
8. With things under control again, I attach the hank at the sail's tack to the backstay halfway between two of the HF lead in wire standoffs.
9. After a little tweeking all is good.
1988 PSC 34