The Kiwi
boat designer John Welsford has a designed a few that I would consider doing it in and are designed for it.
John Welsford's Boat Plans
John Welsford Small Craft Design
Fafnir is designed to be an ocean cruiser for one or two at 13 feet long.
Houdini and Pathfinder are more dinghy-like with centerboards and no
cabin, and they have been taken out for long outings in some tough
weather.
Though for a could-almost-be-called-comfortable 18 footer, you can't beat the Swaggie.
Plus Welsford is currently working on an open cruising
dinghy he is calling "Pilgrim" that will have a bit of ballast and should be capable of an
ocean crossing in the hands of the right crazy
John Welsford Small Craft Design The pilgrim diaries
Sorry, don't mean to sound like an advertiser, but I've been a fan of Welsford's
work for a long time. Lots of his
boats are a simple lapstrake on stringer construction and they all have lovely traditional rigs and
hull lines, and he espouses the sort of inexpensive minimalist get out there and have fun spirit that would be necesary to do any real cruising in a
dinghy.
But a Laser? That IS crazy.