>maybe a slug in the luff track<

On a TheMightyHobie18 & H20 the luff track is made of plastic, EXCEPT, it is substituted for an aluminum 6"-8" luff track at the top of the mast. It is that long to prevent the luff track from pulling out of the comptip, and the sail pulling out the the track?

So I am skeptical that a "slug in the luff track" will not damage the plastic luff track if the H17 is built the same way, or pull the plastic luff track out of the comptip?

Perhaps, you could substitute the plastic luff track with the alumimun luff track where the new head will be located?