Simples!
Item # 1 of the pre-stalling/aerobatics checks is "H". Mnemonic is "HASELL", as taught by Central Flying School.
"H" = height, sufficient for recovery.
Manoeuvre specifically prohibited if not enough feet/metres/fathoms/hectopascals/millibars etc below the 'frame.
If enough exist, then there should be enough separation from terra firma/tide level to recover from whatever incipient spin one has entered. Snot rocket science?
Strangely this probably works for 'Bus and Boeing and Cessna
