Blake - Am I right that putts out to 30' don't require much more power than is needed for a 15' line-drive ... just a higher apex?
depends on what kind of putter you use and how much "oomph" you have. at my peak, yes, i would say this is true. nowadays (less oomph and my primary putter from back then got discontinued) it's more like 25' = 15' pop and i have to put more nuttage on 30'ers.
depending upon the drop rate of your putter, executing an apex putt for many discs is like ~18' power for 30'.
*EDIT* Blake, any chance of getting a video of you performing the technique? No disrespect to Beato'(did a great job and explained it very well) but I think it would be nice to see someone who has mastered it in action, as apposed to someone who uses a different putting technique when he plays trying to imitate it.
Thanks for the video though - its a relief to me because I'm a 100% visual learning, its difficult for me to read something and execute it with confidence because I always second guess myself. I tried to practice short-arm putting when I read it a few months ago and I was doing it way wrong
i'm about 15 lbs away from being willing to appear on film

to some extent, visual aids in this is over-rated. there's only 3 universals i use when looking at putting and how other people putt.
1. you release before full extension (short arm)
2. apex putting yields great precision and short comebackers.
3. keeping as many things in line with the target line will increase technique exectution.
the idea behind finger spring and palm ejection is more important and this only happens due to experimentation, trial & error. wrist extension is visible. palm ejection really isn't. finger spring isn't visible. i'm not trying to come off like a dick on this, but i'm curious as to what it is you are attempting to see? it's more of a feel.
masterbeato's video has his "take" on those things. watching each and every good putter will merely yield "their take" on what those things are. putting is very similar to a cross between jai alai and shuffle board. it's part rotational, part shove. the only "wrong way" there is is if it doesn't work/do it. if you can 19 out of 20 from 20' there's no second guessing.
1. Acceleration; it seems like this technique would be capped at about 20 feet before you would have to start tinkering with the mechanics or 'opening it up' a bit. I could wrong but, it feels a bit like I'm 'hand cuffed'.
2. Flutter; Anyone have any tips on getting rid of this? Could you explain 'finger spring' a little more? It doesn't seem to effect accuracy much but it looks ugly and I feel like its indicating I have a flaw in my form which might hurt accuracy as I try to increase my putting range.
#1 is true. it is capped unless you elongate the stroke. the disc has a lot of launch force but not a lot of launch momentum. i use weight shift and apex putting to resolve this and/or chooing putters with a lower drop rate.
#2 flutter means there is a finger that doesn't leave cleanly. finger spring means you are pushing/pulling the disc with your finger tips and popping it off your fingers when they all leave the disc. an easy example of finger spring is throwing a paper airplane. this is something you wouldn't be able to see in video but it's possible to understand conceptually. honestly the best way to grasp the concept right now is to fold up a paper airplane and try to bullet it with a short stroke and thinking about how it feels leaving the fingers.