Yes the "Skip Goobers" on 19 are an annoyance, especially the "Sand Jawa"! The noise level would still be very high when skip is rolling due to all the other drivers talking on the channel. Their signals are traveling long distances due to the propagation and adding to the noise level. Their isn't much that can be done about it, unfortunately. One of the tools I use to help forewarn me of disasters ahead is I constantly run Google Maps. The real time traffic has saved my butt more than a few times! The radio is still on, though, but heavily squelched.The problem in DX is those that use AM-19:
The Travellers Channel.
More than three-dozen other channels exist.
Adapt and overcome!