For most mining pools, your ZCash address is your user name (or username.rigname in some cases like Flypool and Nicehash).
This is wrong. For most pools it is wallet.rig or wallet.rig.email. For Flypool it's wallet.rig for sure.
For exact syntax - go the mining pool of choice and refer to their faq; all pools have examples of bats for different miners.
Apparently in the ewbf's folder you can find several bats for different pools. The one for Flypool is called Fypool for some reason. Just replace the wallet with yours and you are good to go.