I'm not sure the newer style halyard bails would work as the mast track isn't too strong.
I agree - I'm sure it would not work. The upper part of the 18 mast track is a plastic extrusion that snaps onto the back of the comptip. If you tried to tie a bail line through it it would snap.
I also just riveted a stainless tang to the mast and hung a block from it.
Chris.