(I may be bias, but I have honestly talked dozens of "hedge fund wannabees" out of doing so for some of the following reasons).
First off, we need to actually define "hedge fund"....many whom I've spoken with are talking about "borrowing' money from friends and relatives under the guise of "hedge fund" in an attempt to add some legitimacy to the venture.
In that case, it makes little or no sense to have this "hedge fund" because you have all your relatives bugging you at every turn...and it's still not enough $$ to participate in most working strategies. And, if you're any good, would you want to give away 80% of the profits....a decent prop firm would take $50K or so, and let you use a couple of million, and you keep all the profits.
Second scenario is trying to go out and raise $30Million or so... pretty hard to do....your 2% "vig" would make sense at this level, but you have a lot of regulatory and tax hassles....but this makes some sense overall.
It boils down to whether you plan on using the capital to actually make money, or to siphon off the vig and hope for the best. This may sound "offensive" - but all I can do is go by the many people I've interviewed and discussed this with.
Yes, we have had hedge funds under our wing, fwiw.
And, BTW....I noticed some speculation above about prop firm's using traders money or outside money...just for the record, we have no outside money, and don't need to use our traders money.
All the best,
Don