I'd say that cored panels
are the way to go. The lightest, probably being carbon fiber skins, with a nomex honeycomb core
. And a good bit cheaper, but still real light, would be; E-glass skins, with NidaCore plastic honeycomb core
. Or, the standby; E-glass & foam, or balsa core.
You can get; Honeycomb, NidaCore, & Balsa Cores, for the same price
per sqft (or less) than good marine
ply. And putting skins on them is cheap
, so there's little downside really.
If you want light weight, but with the traditional look, you can;
- Overlay wood veneers onto a cored panel.
- Use wood veneers as the top skin on a cored panel
- Use 3mm plywood
as the top skin on a cored panel, & add colored striping, to resemble Teak
& Holly. Either actually use a light colored wood to said effect, or just epoxy
in place some lines of white sand or similar non-skid material. Including white skateboard tape in a pinch.
To those advocating sticking with the heavy, thick plywood
floorboards, consider this.
If you go with a honeycomb cored, carbon fiber panel. Sqft per sqft, they're lighter than beer
cooler foam. So the weight savings is HUGE. Just don't let anyone walk on them inn stilleto heels, as they punch right through the skins. As well discovered by the One Australia
team during the '95 America's Cup ;-).
PS: Laying things under a vacuum, on a mold
table is the way to go. You get a perfect finish, with zero work. And minimum weight in resin to boot!