46 years = a good run for a Transom

[Raider Ronnie]

Originally Posted by Rockfish9

I will say this about coosa, it is rediculosly expensive, and for all practical purposes, a huge waste of money, it's just trendy, properly sealed marine plywood will last longer than most people will keep their boats, in my case, mine will be rock solid long after I'm taking a dirt nap
I've done many of them, the demo is probably the hardest part, I've got most of the grinding done..what's left is fun..
This is not a difficult job,it only requires a basic understanding of boat construction, willingness to work hard and get dirty, if you have the proper tools, proper safty equipment and do your due diligence on prep work, its not a big deal, some people tend to over think and complicate the build, the proper planning makes the job go smoothly, I'll be fabricating the transome out of 3 layers of Okoume, laminated with thickened epoxy,the stringers will be laminated 3/4 Okoume, totally encased in glass then bedded and filleted with thickened epoxy and then tabbed in with 2 layers of 1708 and 2 layers of 1.5 ounce mat..
Easy peasy..I'll be jigging haddock in May.

I’ve done more fiberglass work that probably anyone here.
I love Coosa ( other than cutting or grinding. Dust is nasty)
Won’t suck up water and holds a screw (within reason) but I do agree it’s expensive (though it’s nice to have friends who buy it wholesale & do a lot of volume 😏
Plywood is ok as long as completely encapsulated in resin.
Marine plywood is not cheap either !
The minute someone drills and doesn’t de-core….. different story.
Coosa you don’t have to de-coring and is very lightweight

[Rockfish9]

transom is in, just needs fairing and gel coat, new Douglass fir keel stringer has been installed, fully encased in fiberglass and epoxy, sole has been raised 4" by adding Douglass fir risers( fully encased in epoxy and fiberglass) rear splash well was molded and bonded to the transom with thickened epoxy, wire chases have been run as has plumbing for the bait well and wash down pump, a below deck battery area has been created as has a mid ship anchor locker, box stringers have been foamed in, trimmed flush and sealed with epoxy, then a veil of 2 layers of 1.5 ounce mat put over the top to seal the "box" I'l prepare the plas-core deck this week and start the install next weekend.