Yep, I have a 3 day followed by a 4 day with 25 hours off between release and report. However, the 3 day has a 31 hr layo, and the 4 day has a 34 hr layo, so I'm "good to go!".
It's not 30 hrs of BLOCK now, they don't care about block... it's 60hrs of FLIGHT DUTY PERIODs, and guess what? a 30 hour layo is NOT a FDP, it's an opportunity for your to recharge your batteries away from home in a crppy hotel room, at no cost to the company...
We do need to make that time away from home cost the company something, and get paid for it.