Not quite what I was looking for but...
I asked because here in MN we have had to register canoes/boats for many years. As part of the exceptions in the regs, antique craft have the option of displaying the numbers/sticker on a removable plack.
Due to a high number of re-newales this year, I complained and called my Rep, the result is that there is a bill being proposed to exempt antique paddle/row craft (defined to be older then 1959 and used as a antique) by either just not registering them or by issueing a permit that allows there use without registration. There is a precedent here in MN that owners of antique snowmobiles can get a yearly permit that allows the mach to be used on occasion without registering it.
Don't if it will go any where this year as time is getting short but maybe next year.
As for the registering canoes, when I was talking to the DNR guy about it, he made a good case for registering and charging a fee to canoes/paddle craft. They benefit from the DNR activities, ranging from improved waters, improved wildlive habitat, to understanding the numbers of folks using canoes. The jist is that without the registration, canoeists didn't have any "voice" in the DNR planning/activities because they were unknown.
My complaint isn't with registration, it's with registering 6-10 canoes, some of which haven't seen water sense the last registration. I'd like to not register them and be able to still use them on occasion for specail events.
Oh, I got side tracked, appearently the "push" to register craft is driven by a federal law and it mainly is for motorized and large craft, but (at least here) the DNR is worried that there is a effort ongoing to change it to cover everything, including canoes and other non-motorized craft. Don't know if this is for real, just that the DNR guy was worried and thought it was coming.