I learned Spanish in Spain, and have taught it at basic levels in universities for years. But I don't have a great set of words and phrases of encouragement that are yelled or said during a juerga flamenca. Can anyone add to these few I have already heard?
ále!
toma que toma!
cómo baila!
esooo
derrama arte!
así!
así se baila!
manitas de plata!
ále guapa!

Puro y bueno .

Some say Agua but sometimes it is good to say nothing.
I think knowing when not to say anything is also flamenco.
saludos
Tomás