IF I am reading correctly and the final goal will be to weld the "panels" together (as opposed to being able to bolt and unbolt as there maybe a need...
Travers and KBC both list square carbide blanks BUT the bulk are not actually square (rectangular section) and many are quite short (1.5" or so) but...
Thanks for all replies...based on some of the feedback, there are others who have found the mounted points less than quick acting, I was at the point...
Different situation but I happen to agree with vpt's suggestion...but ya gotta stick to it...i.e. don't "cave" at some future point until you can pay...
I'll be a bit contrary...if there is a chance the trailer will be used for something else, would it come in handy to have those ramps form a low side...