There was a guy in my crashpad who was a DL FO on the -88. Could've held CA if he wanted or wide body FO but he was crushing it on green slips. He'd bid CKA and when his trips got bought for IOE he'd green slip on top basically triple dipping. One month he had 280 hrs credit and 17 off. So you can definitely credit a ton at the legacies but I'm not sure how frequently you can credit that much.

At SWA I've been easily crediting 120 tfp/mo and keeping 14-15 off living in base. I've flown 650 YTD.