Doesn't sound to me like your having a problem. Go ahead and lower the ball and try to get more level. With the winds you are describing you are doing well. There is no hitch that you are going to out on that will make your trailer disappear! If you have money just itching to be tossed away, go ahead and buy one of those expensive hitches, but I promise you that trailer is still going to be back there.
I have towed many thousands of miles with my cheap dealer WDH hitch with a single friction bar and never have even come close to an out of control or dangerous situation.
You got money, go ahead and spend it,or just tweak what you have and spend the savings on two hundred gallons of gas for the truck!