I have two A-Frame adapters. One By Ballard and one by Brinly.
The Ballard is nice for the 'tow tab' that is on the opposite side of the sleeve hitch adapter, but the adapter is limited as to side to side adjustment.
The Brinly has more holes for side to side adjustment and possibly other uses.
Since you are making your own, I'd suggest you copy the Brinly design, and add the 'tow tab'.
Edited by OldBuzzard, September 07, 2015 - 05:06 PM.