Green’s Dictionary of Slang

crazy, wild, confused.

1912		Ade Knocking the Neighbors 50: I have played the Hoop-La Game to a Standstill, so it is me for a Haven of Rest.
1931		Ade Old-Time Saloon 162–3: The high school students and collegians have been shown up [...] as hoop-la night riders and hell-raisers in general.