I started with the old Wm Garden line drawing of the W36 Cruiser (Sedan) and updated for Weebles. I then went to Freelancer.com, a gig-site, and hired an illustrator to produce a clean rendering. Was about $40 to have done.
Peter
M/V Weebles 1970 Willard 36 Sedan Hull #40 Ensenada, MX
