Arches that don't fall.
Kato Marine did my davits, and although they were not custom, their attention do detail is superb. They make custom arches, and I am sure they would do a great job.
Madden Mast and Rigging, which is just up the road from Kato, also does custom fabrication (nice picture on the web site). They made custom dorade covers for my PS31, and the work is excellent.
First Sight PS31 #128