I would say tipped his hat because without it you need a word phrase or else the sentence wouldn't make sense.
Answer: add a comma after the word long.
Explanation: you always but a comma when decribing with adjeitves
Answer:
"This garbage is so stinky"
"My buddies and I are gonna head out."
"We should get going!"
Explanation:
These three out of the six seem to have a more informal tone than the others.