Towing with a mini-van is doable IF the trailer has brakes,you have a tow package and add a brake controller. I would stick to an A Frame less than 2000 pounds (ex: Aliner Classic, Ranger 12, Ranger 10). You also may need sway control and/or WDH, depending on your van. I'm not sure I'd try to tow an Aliner Expedition or a Ranger 15, both of which are over 2000 pounds. I'm conservative with towing, and it's served me well over the years.
I tow our Aliner Ranger 15 with a 2010 Pathfinder (6000 lb. tow capacity), and I don't need the WDH or the sway bar. However, I did add a tranny cooler b/c this generation of Pathfinders tend to have transmission issues. No sense tempting fate...