to the forums. Hope you enjoy the stay, and learn a lot, and can teach others what you already know.
While I can't answer your question, I know some have the slider hitch, and use it, others have it and have not needed it, and some don't have one. Kind of mixed bag.
I also moved this to Palomino section, so maybe someone here can answer your question on the pin location.
2012 Ford F250 ext. Cab 4x4
2002 Jeep Wrangler Sahara
2008 Yamaha V-Star 650 Classic
2008 Work and Play 18LT