Without wanting to start a huge argument that ultimately boils down to closely held beliefs (an argument dead-end), but probably doing so anyway, I would tend to argue that entering fins-on at Monastery is considerably less safe than putting them on once you've cleared the surf zone. That said, you have to know what you're doing. And I agree that it's generally better to swallow your pride and just crawl out, reg in and mask on and yes, fins. As Chuck said, take those off at the top of the berm.