One Yacht I would love to build is a Brent Swain Origami yacht
www.sv-mom.com/construction.html I like the idea of the steel sheets and if your reasonable welder you could build the basic hull in less than a month.
It has bilge keels so you could bring it in on a high tide drop your anchor have a few beers and climb down the ladder and scrub your sides down and bottom paint over a couple of days no marina or crane needed or fees as it has the bilge keels and a rudder post to sit on
I did read of one skipper didn't leave a ladder down while walking to land when he got back he could not get aboard and drowned
I do know Some one tried to take on a large ship and just bounce off , in one
Just to bloody old to do it now
a welder, a few comalongs ( chain or steel rope winches) and some dirt to lay it all on and a good scrap yard for parts if you wanted to do one on the cheap
you end up with this >