I have one of these trailers and they are long. I used some fairly large decals on mine and found taking a new #11 blade and poking a hole next to the rivets and soaking each with a drop of decal solution the decal settles right around the rivet and pushes the little bit of air out.
Well, there are kits I have trouble leaving on the store shelves, especially if the price is right. I was at Ollie's and came home with 2 more '40 Ford Coupes and 4 USPS Pinto's.
I'm sick..... sick I say.