I use reverse bookings a lot. I find the process of selecting my partner for the evening quite exciting and it adds to the anticipation.
Obviously you get a lot of bids from girls who do no meet the requirements, i.e. I always ask for a slim girl but I often get larger ladies responding, they're just chancing their luck and you have to filter those out.
Also there are a lot of girls who bid without ever reading the text of your bid, I think they just bid on everything, for them it's a numbers game. I never accept a bid from a girl who hasn't written a message along with her bid (although over time I have noticed that some girls have a text that they simply copy and paste into every bid that they make).
Apart from that I have found it to be a very successful way of finding a date (lol that word again) for the evening. I don't ever haggle on prices and I find that girls often bid lower than the prices published on their profile, typically though I expect to pay around £100 per hour.
The next biggest problem is girls not turning up. I always do out calls in a hotel (it's neutral ground) and I have learned not to accept bids from girls who are far away. Since my bookings are usually for a number of hours I honestly believe that they bid thinking they'd be prepared to travel that far but then, on the day, faced with a 3 hour journey or perhaps having received a more local offer they get sick, or Grandma has been rushed into hospital or .... or .... I have heard all the excuses.
However, in my experience that's no different to selecting a girl from her profile, I still find that the number of girls who actually turn up to an out-call is around 60% at best. In my case that's usually not too much of a problem, I travel around the country a lot for work and am in a expensed hotel. There will be another day and will be staying in the hotel in any case with not much else to do.
So I have learned to accept their excuses with good grace. There's nothing you can do and who knows, this time it might be true. It costs nothing to be polite.
I make it easy for the girls to cancel; before the date I make it clear that if for any reason they find that on the the day they can't make it, that it's not a problem but would they please let me know as soon as possible. If they're not going to turn up I'd rather they let me know than be left waiting around for ages, calling a mobile number with no reply.
One time a girl cancelled on a three hour date for which she had already bid a very good price, she cancelled and I sent her message to say that it was ok and that I understood that sometimes shit happens. She replied thanking me for being so understanding and offering me an overnight for the same price to make up for letting me down.
I don't often use any other form of booking these days.