I know that others here have reported good results.  So I tried it.  As I recall I spent $100 for tokens, and spent them as carefully aw I could.  No good results whatsoever.  I think SB is a total scammy waste of time and money.  

I've met several off SB for closed doors sessions.  You do have to choose carefully and of course luck has a great deal to do with it.  
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I've never proved there were bots and haven't uncovered any pattern that suggests a bot.  I see some chicks have been on there for years.  But I've had sessions with several that have been on there for years.  
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I do generally wait for them to contact me.  I sign in daily which apparently keeps my bio near the top.  So I get two or three notes a day.  I'm 71 so obviously not a top pick for most, so that level is quite amazing.  
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I think if you go after the most beautiful you are going to have a lot of competition. That's not my target.

There are definitely a lot of fakes on sd Including basically all of the nines and tens, and probably most of the eights.  But given what seeking cost per month, it’s worth it to put up a month worth on Sd And just look around a bit I have had very good luck

On SB I generally buy the most to get the cheapest per token. Because they don't expire I can dip in and out as I like. I am parsimonious with my use of tokens and never waste them on looking at their private pics. That said the chance of meeting a POT is pretty slim. I get a fair number of dm from ladies given I'm an older guy. 90% of them are from out of the area. Those that are local I would say I have a 1 in 10 chance that we will actually get to text which then means a likely meet up. I stay away from gorgeous women. I have been on SA over the years and yes, almost no crossover.  I have had equal luck with both sites and my current SB I found on SA (we've been hanging out for 1.5 years.)

Don't message a what appears to be a fake

I "invested" in one (cheap) escort amount -- $300 -- and it has paid off handsomely over time.  I have had 10-12 SB's from SD.  Yes, there are an enormous number of fakes and all the 9s and 10s are fakes.  But alot of the 6 and 7's give really -- I mean REALLY -- good service and are happy to play for not that much money.   One key is to get as far out of the big cities as you can.          

SB is a No Go for me. I think the better strategy is to stick with Seeking and stay away from the 8's-9's-10's, unless you want to spend a lot of time vetting and dealing with scammers, game players and fakes in the hopes you find a unicorn.  The sweet spot for me is women ages 30-40 who are attractive but not as sought after as the smokers. If the look/body has been maintained, even women from 41-51 can be a hidden treasure if you don't mind a few wrinkles and a few extra pounds. I look at the overall package: is she a fun, nice person who is a joy to be with; does she love sex, is she kind, reliable, affectionate? Generally speaking the hotter the girl, the less she has in the other departments.    

My strategy on SB is a long game.  I buy maybe 500 tokens.  That means I get 50 contact attempts at 10 tokens per contact. Then I wait and watch.  I get a lot of newbies contacting me, since apparently they are encouraged to contact everyone. I ignore them.  But I kind of track the ones that hang around for weeks and are routinely active.  So eventually if one of the ones that contacted me still seems active several weeks and I am interested in her, then I will spend my 10 duckets and try to strike something up.  Probably 9 out of 10 go nowhere.  But my limitation has always been the money it costs for the meets, not a shortage of babes who will go BCD with me.