you only need a bondsman if you are arrested for a felony, you(or friend) can just pay your full bond or the 10% (which you don't get back) bondsmen normally charge extra on the 10% e.g paying 330 instead of the 300. it's normally not a bounty hunter just the bondsman that'll come if anyone since you'll have a warrant for your arrest anyways.
innocent until proven guilty is bullshit considering they take your mugshot/fingerprints at arrest. and if your too poor for the full bond you're out money just for freedom. which is shit along with court cost and fines it's a system made to keep the poor poor