Thirty minute naps every six hours. That one didn't have too much data behind it, either.
That's the dymaxion. I've never tried it myself (School/work being inflexible in hours to the degree that I wouldn't be able to nap.), but of what I've read, it's one of the most difficult to acclimate to.
One of the easier ones (or at least easier than dymaxion, maybe not as easy as biphasic, but it gets more wake-hours) is the Everyman. It's a three-hour core nap with three evenly spaced 20-minute naps during the day, with some room for flexibility.
And the basic rule from that three-and-thre model (which can get you down to biphasic, or up to the uberman) is for every hour of core you add, remove one nap. And every hour of core you remove, add a nap.
An exercise:
Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
(Based on: Is That Your True Rejection?)
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
To alleviate crowding, Armok_GoB has created a second thread for this challenge.