[quote=Edchris177][quote] The question now is whether to use something like JB-Weld, or West Systems epoxy, and possibly reinforcing with kevlar fluff, microfiber or other filler.[/quote]
The boat survived 30 odd years with only the hull wall, you won't be sailing it another 30 from now. Use West epoxy, it will bond well to the inside of the hull. Add a bit of microfibres, but not so much that it won't self level. Dril, rivet & sail the crap out of it til you are to old!
I sailed my 5.7 an entire season with 5 rivets pulled partially out. I wouldn't bother moving the track, with some epoxy it will be as strong as new.
[quote] If it fails on the water you will not only have a difficult time limping into shore, but the track will be trashed.[/quote]
Not to big a deal. Maybe more if you are in hurricane conditions. I tore the tramp on my 20' x 10" Mystere, from stem to stern, 20 miles from home. Sailed it back with no noticeable difference, other than you had to watch where you stepped when changing sides!
Old Nacra tramp tracks are readily available, I think Pete, & Dan Berger have them pretty cheap.
[quote]As best I can tell the hull was not reinforced in any way where the tramp track is riveted, and no backing is used for the rivets[/quote]
Correct, here is the interior construction of a 5.2, same as your 5.7
[url]http://www.thebeachcats.com/pictures?g2_itemId=82844[/url]
Of particular interest for your problem is this photo,
[url]http://www.thebeachcats.com/pictures?g2_itemId=82865[/url]<!-- editby --><em>Edited by Edchris177 on Nov 02, 2016 - 08:29 PM.</em><!-- end editby --> [/quote]
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