Would I ever be happy towing with a half ton truck

Sway could be side to side rocking, correct bars vs none helps. None even with CCab 3500 a 25' TT in windy conditions does this. Basic WD system less, dual can less yet. Would assume a Hensley even less.
Fish tail sway, uncontrollable like a fish tail, that is a set up issue. Tongue too high, too little hitch wieght, dual axles on trailer that are V'd or out of alignment, so trailer wants to go in circles .... Now one has to fix issue(s), then put safety bars

Marty