In my experience, most girls either leave it where the client has put it, which is usually in a spot where you can keep an eye on it, or they actually count it and pocket it where its not so easily reached.  Its pretty balsy for a guy to try to get away with something like this.  Heard about a guy that did that once and when he left the hotel, the girl's "boyfriend" followed him to his car, then bashed in taillights. Threatening to then slash his tires, and then his throat if necessary to get his girlfriends money + an extra $100 fine for being a total fuckhead

I'm sorry to hear you had a bad experience like this.  I know this is something you probably don't want to hear, but other than posting here for the benefit of other ladies, there isn't much you can do.  Just try and look at is as a "business loss" - something everyone will go through at some point when you are self-employed.  I think this situation is pretty rare, so I wouldn't worry about it too much.  I've known tons of ladies who don't ever look at or count the donations of their clients until after the appointment is over and have never had problems.  Then, there is karma;  I'm sure down the road something good will happen to you to make up for it, and hopefully something bad will happen to the cheap asshole that took you.

In general, and fortunately, such problems are not routine.  Sorry this happened to you.

Perhaps you might establish a policy of asking hobbyists to leave the donation in the bathroom. Then, before the festivities begin, excuse yourself for a moment and go into the bathroom with your purse, check the donation, put it into your purse, and then put your purse into a drawer.

Or, I know of one lady who has established a somewhat different method.  Her gentleman callers are expected to leave the donation on a dresser or table and then excuse themselves for a minute or two and go into the bathroom.  That gives the provider time (and privacy) to check and secure the donation.

Guys and gals... We'd all have a much better time if we'd resolve to treat each other with mutual courtesy and respect.

There are TER rules that state you can not out a
client on the boards.

But it is standard practice to "back channel"
(i.e. email) the COMPLETE information of rip-off
and/or dangerous clients.

Also, you should post this warning on the
provider only board over to the left.  If you
do not have access to that board, email TER to
obtain access.

Sorry to hear about this.  There are unfortunately always a few bad apples on both sides that make it difficult for the rest of us to simply relax and enjoy ourselves.  You've already gotten plenty of good advice; the only other thing I can suggest is a PM to our mod to make sure you understand exactly how far you can go in discussing it here.  TER simply won't let you post personal info about him here even if you were of a mind to and it would be a shame if you ran afoul of these rules even though in case you are the one who suffered the loss.

I thought I did everything correctly, but I guess you win some you lose some. Fortunately jerks like that him are a rarity in this community. Never fear, I make the promise that I would keep ones info confidential, and that’s just what I do. Even if it was possible, I would never try to post anyone’s personal info on this board.  
I want everyone to know that I appreciate the advice and support. At first I didn’t know what to do about the crappy feeling that I had about that incident but I think I made the right decision because this community is simply amazing. I appreciate everything.
I promise not to let that one bad apple spoil it for the rest of you wonderful GENTLEMEN!! Thanks for everything.