I'm a new owner of a 2004 4Runner Limited V6. Hopefully next year I will have bought a new travel trailer in the 23 ft length range & total weight range of between 3700 & 4000 lbs. As you may know, the 4Runner has a weight carrying hitch rated at 5000 lbs & tongue load of 500 lbs. My wish is to learn as much about sway control as possible from those who have done this. My thanks to all who have experience.