rhagfo wrote:
X6 or whatever, Clean inspect Repair correctly or replace bad parts, Bungee cords and Velcro have their place, they should not be needed to hold the connector in place.
Ditto.  
This is a important safety related issue and most definitely a band-aid approach should not be taken.  The plug should go in easily and be held captive the entire time.  Do visual inspection first to see if it's corroded, dirty and/or misaligned.
The recept. on our '09 was corroded badly when we got it 2+ years ago and had to be replaced.  It doesn't necessarily take long for these things to go bad.  A hitch shop replaced ours with an aftermarket part instead of an OEM one for a fraction of the cost.