Sorry but chucking has EVERYTHING to do with the hitch...
If your concerned about 4500lb pin weight this should ease any concern:
https://www.youtube.com/watch?v=78l-PadWAroI have yet to hear anyone who actually "uses" this hitch complain about it, only doubters who can't get over the concept that something so light, simple, and cost effective can be up to the task.
You'll also hear many refer to it as a GN and how it will create additional forces on the kingpin which is entirely untrue. THe fact that the ball is raised makes it no different than any other 5er hitch in this regard.