QT I'm pretty sure OM was referring to them as a reference for trips and amenities.
I'm actually looking for the same exact thing. Please keep posting what you find!
I really like to wear a wicking under layer, a wollish layer, and then cover with Columbia rain gear. Bibs n jacket. Stay dry, wind proof, layered, and happy.
I have one of those inflatables too.
I use Nationaltrailerregistration.com . It's a little bit of a PIA to get set up the first time, but well worth it. You can register trailers sometimes up to 12 years, depending on the type. I love not having to worry about them every year.