Good God! I was 4 at the time of the Tonkin Gulf.
I *think* I'd have been--on both Korea and Vietnam--an airpower-and-logistics guy. That is, I think I'd have said that the U.S. should provide a bunch of tactical air support, and a bunch of logistical support, and if Rhee/Thieu could not have repelled the Commies under those circumstances, then escalating the war (given its horrible destructiveness) would not be a good thing.
I'd have been right about Vietnam. I'd have been wrong about Korea. A lot more people would have been at the Great Leader and Dear Leaders' mercy for the past fifty years.
Brad DeLong