I too have been sailing and noticed a side stay flapping in the wind... YIKES!

On my old boat(TheMightyHobie18) i had to tention my forestay with the side adjusters and got sick of having to tape and retape the rings every time so i switched to shackles.

I now keep a bunch of spare shackels, rings, and pins onboard and ready to replace in a pinch. I keep them close to where i think i may need them.

Clear andjuster covers is a great idea. Perhaps some clear tubing could be used.