I also used to have similar sleep issues. What fixed it for me was simply making whenever I got home from school/work my bedtime. It doesn't allow for much of a social life, but you don't get into a situation where you're rushed in the morning. The trick is that you just have to go directly to bed when you get home so you don't end up playing dwarf fortress for 12 hours straight instead of sleeping.
The whole polyphastic thing just REEKS of pseudo-scientific hogwash.
First off, proponents of the method make extraordinary claims that contradict everything we know about sleep. Yes, occasionally science has "the earth revolves around the sun" moments, but they are extremely rare.
Another red flag are the conditions of failure. Miss a nap by a few minutes in the first month and you apparently have to pretty much start from scratch. This allows people to delude themselves into thinking the method will work if they only try harder.
Next, we have the dubious "celebrity endorsements" that fall flat under any scrutiny.
Of course we also have a little bit of the "us vs the establishment" going on. I detect quite a bit of resentment in a lot of these blogs towards traditional medicine and people who doubt, or refuse to accommodate their eccentric sleep patterns.
It's also extremely unnatural. Has there been a single society throughout recorded history that had widespread use of the uberman system, or anything like it? Feel free to call me out on that if you find one.
I still haven't seen any scientists or doctors endorse the method, only a bunch of blogs and forum posts. Hell, even a blog by a (medical) doctor living on this schedule would be something. Those anti-vac assholes (yes, they are assholes) at least have a faked study. Anyone can write a blog saying just about anything they want. In fact, I think I'll start a blog on the benefits of methamphetimine use on my sleep habits. I can stay up for DAYS with no ill effects, and I feel great!
The reason I'm trying to discourage you from doing this is that it's unhealthy. Sleep doesn't get the respect it deserves, and not getting enough of it can have serious health consequences such as a suppressed immune system and heart disease. Many systems in the body are set up to be in sync with your sleep cycle. It should not be tampered with lightly.
I'll echo what a few people here have said. If you're worried you're not getting enough sleep, or that your sleep isn't quality, see a doctor, not a blog.