There's a specific bracket for these...
https://www.murrays.com/product/08-1450d/Hobie 18s have adapter brackets, as well:
https://www.murrays.com/product/08-1451/This will probably generalize to most furlers, but will give you an idea how to make your own with strips of aluminum and a vise.
Since you're posting in the Wave forum, I don't think you have a stock furling set up.
In any case, the slot between the bridle wires, above the hulls, and below the jib is pretty clean air when the boat is moving forward.
Randii