I did my first hookup with the Andersen rail mount yesterday, but no towing yet. First of all, aside from over shooting and under shooting the hole a couple of times, it was easy. I will mark the hole center on the block to make that easier for the DW to see. I am using the Reese picture frame adapter in the pucks (already had it for my old Reese 16k), and it accounts for my only disappointment. The fiver is an inch nose high at the lowest setting. Not enough to cause issues, but the 16k adjusts lower than most and had it perfectly level.
I installed the Andersen adapter with the hole behind the pin because of potential problems of hitting the bed sides with the long MorRyde 1621 replacement. The back of the pin box is about 10 inches or so from the tailgate and should clear the bed sides just fine.
If I was starting from scratch, I would get a goose neck ball and the Andersen Ball hitch, but with impending retirement, I needed to keep my costs down. I will sell the 16k after my first trip if there are no issues and I don't expect any.
One plus already is that I need to make a large haul to the dump today, so unhitching and removing the Andersen will be no problem.
2015 F350 XLT PSD CCSB SRW, Andersen Ultimate hitch
'12 Cougar High Country 299RKS, Mor/Ryde Pinbox
1/77 Armor Bn, 5th Mech, I Corps