On the eyelets for the toggles there is a rubber over a metal clip for protection. Unfortunately, this is loose so that it can slip and thus the opening for the gag can become too small. To remedy this, I removed the rubbers and replaced them with shrink tubing.
I bought the 3 meter length, my boom measuring 4 m.... but although I have a sail of only 33m2 from the second bungee cord at the rear, we are unable to furl the sail with the boom and since all the bungee cords have the same length, I didn't even try to furl towards the mast