I built a Teal of aluminum a couple years ago. 1/8" plate weighs about the
same as 3/4 ply, but without any additional glass, paint, or water
absorption (still, it feels like about a ton when you're dragging it up the
shore). Should last a few lifetimes, even if it gets forgotten, full of
water, for a decade or two.
Teal was built as a simple trial, to see if an aluminum boat could be
practically done by an amateur. I cut out panels, and assembled over
wood frames, and had it welded up by a pro. Not as sticky as stitch and
glue, but wear socks, as the sawdust is no fun in your shoes.
What I really want to build is an aluminum stretched Diablo, say 19'x5'.
There's a picture of one in wood on the web somewhere. This could be done
out of stock 20' sheets, with no butt joints. An indestructible workboat
for basic transportation.
My current Diablo, with a Yamaha 25 4-stroke, goes 20-25 mph with pretty
much any load or cargo, despite a chewed up prop and cut-away bottom -
another story. There's a lot of movement in the transom, especially when
you drop the 150lb motor down (no power tilt/trim for my wife!) or hit a
ledge at speed. This movement is despite my efforts to beef up the transom,
On the other hand, recent correspondence with Robb White has me dreaming of
an aluminum Rescue Minor...