The "hitch" he refers to is probably the part that goes on the tow vehicle. There are many different options here. Depending on your tow vehicle and the weight of your trailer you may or may not need sway control and/or weight distribution. The folks on here can advise you better if you identify which trailer you are looking at and what you plan to tow it with. Some dealers can be very helpful and some less so.
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
2001 Safari 25 RB Twin (Gone, but not forgotten)
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
WBCCI 1322, TAC FL-39, AIR 82265