Re: 1975 Omega Restore, the project goes on.
Couple of comments...it's been a while since I've checked out your thread Thrill.
Looking great so far! I wish I could get out to work on my boat, but -26 weather and no garage/shelter puts a quick end to those thoughts!
The first thing that went through my head when I saw your aluminum bracing for the cap was, I hope there is wood fiberglassed behind that section...seems that just drilling through the glass and bolting to it for support might find itself flexing over time and elongating the holes, causing rub damage long term...maybe not if you used lock nuts though....my Glastron supports the cap by running SS bolts with locknuts through the glass and it held up well, but there was a lot of support panels. Something to think about before you commit to closing that in before you can't muck with it easily.
The second thing was that I really like the rear seat bases...absolutely an excellent idea. One thing that I would consider though, is creating a vent slot or two in the front of the boxes for ventilation. I think the majority of the rot comes from bilge water evaporating and trying to find a way out...usually finding itself clinging through condensation on the backside of the support board for those jump seats and the bottom of the seat cushion. You could say that you'll flip the seats up and open whenever the boat is parked, but you can't guarantee you won't forget.
Beyond that, very inventive ideas, ones I'm sure will be stolen and used by many who peruse your thread ( myself included )