This step is used by Lupi and Santucci, but defined by neither. So "reconstruction" is a matter of sifting out what information we have from where and how the step is used, and then making a genre-appropriate guess.
Below is a bare beginning only - running notes (that I wish I'd begun keeping in writing long ago!) on what we can deduce.
Dictionary - Florio
- Corvetta, a corvet, a sault, a prancing or continuall dancing of a horse.
- Corvettare, to corvet or prance or sault as horses of service.
What can we deduce?
- probably is/includes a jump ("sault")
- may relate/evoke a movement made trained horses
Modern use of similar word - Dressage - courbette
Lupi's Canario
- these two uses in Lupi, Canario man's second mutanza
- tre corvetti a man manca co'l piede manco alto - 3 corvetti to the left hand with the left foot high
- otto corvetti a torno a man dritta, co'l dritto alto, e l'atro a terra - with 8 corvetti turning to the right hand, with the right (foot) high, and the other on the ground
- implications
- can do several/many corvettti one after the other
- can be done to the/a side
- can be done turning
- one foot is/can be held up high, the other on the ground (perhaps usually if going left, the left foot is high, etc)