What is the most effective tagline you have used?  Mostly interested in what married guys have to say.

“Daytime fun” not really effective, but it does hit the target market (semi pros).

What has worked for you?

Far too many SD profiles claim they are "Fun."  Like a guy who isn't fun is going to say "Hey, I hate fun!"  

 
And far too many SD profiles are self-centered brags about how cool, good-looking, and awesome they are to be with.  Make your tag line about her.  Write your profile about how much you want to help her, because seeing her success makes you feel good.  

 
- She aint looking for an Alpha-Male to marry and ignore her.  
- She aint looking to be your silent arm candy while you treat her like furniture  
- She aint looking for an older version of the broke douche bags she meets in bars.  
- She aint looking for some ass hat who thinks she should feel to be in the same room as him.  

 
She is looking for a Daddy who cares about her, who wants to share with her, who wants to help her with whatever her goals are.  

 
How do I know all this...? I have the personal research tools.  

 
Now your post alluded to a specific need for guys with an SO. I have nothing for you on that topic.  It's not my expertise.  Everyone I know sees me dating multiple 20-somethings. Everyone I know understands I have disposable cash and no dependents or debts.  

 

Life is good

 
The Cat

All good points.

The issue is us older cats can’t prowl around at night (particularly with COVID).

So… options are  

Daytime Fun?
Let me be your Secret ATM
Looking for the Other Woman

Or  

Lie, lie, and lie some more.

I know what Billy Bob would say, but trying to be halfway truthful.  Bagged my limit when single.  Trying to be kinda honest, and snag what is on the site for the reason that they are on the site.  

Works well with 24-30, but not the coeds.  Not sure they would go after 56 regardless of what I say. Lol

Just edited my profile with the most soft shit I would never say in real life….we will see.

Let’s see how that flies. Lol

Why?  Dude, that's the easiest answer there is:  Money.  

 
I just passed 60.  One of my past SB's told me she regularly sugared with guys over 70.  Sildenafil is your friend when Pussy is your passion.    

 
Again, an upfront and honest Tag Line might work for you. How about "Don't let my wife know..." To be sure, some SB's will make you an auto-pass. But you may be surprised at how many other SB's jump on that. And then they may jump on you.  

 
Life is good

 
The Cat

 
The Cat

I took a look at the profile of a SB who has a PhD education.  Her "About Me" section read:
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Good looks dat really it an u know don’t play with me
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I probably won't reach out.  I am guessing that she is looking for assistance with her student loans and I'd rather not get involved.  On the other, she might only owe $12.95  Maybe I should give it some thought.

Well, there is certainly NO DOUBT that she writes like a PhD.  Probably in English Lit. or Communications.  

 
Yeah...yeah... Communications dat really it!  :p  

 
Life is good

 
The Cat

Marriage cuts both ways.  Some SB's are against dating married guys.  Some think it makes the guy safe from getting too involved.  Some chicks get turned on by "stealing" a married man.  I don't have percentages to assign to those categories, however.
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I definitely say it up front in my bio just to eliminate wasting time with those who find it objectionable.
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I haven't researched it, but most chicks in the real world want mates with status, money, looks, intelligence, sophistication,  elegance.  You don't really have to be or have those things.  You just need the illusion of those things.  

I got great responses to a tag line that was “not Fred.”  It invited obvious responses like “well who are you then”  

Also got great response to “are you the one?”

"Writing in English is the most ingenious torture ever devised for sins committed in previous lives. The English reading public explains the reason why." - James Joyce

Def agree with Lester. I've met SBs who totally prefer dating married guys cuz they are safer and won't get too involved. They are usually girls who have had bad experiences with guys who have become too clingy, too controlling, and want them to become exclusive and take down their SA profile. Then I've encountered others who refuse to date married guys cuz they don't want the bad karma of enabling a cheater.  They assume that all married guys on SA are cheating on their wives.  So I'm always quick to point out I'm in an ENM marriage and my wife approves.  They usually really like the honesty this implies.  And then there are many SBs who don't give a shit one way or the other. They figure they can play with anyone they like and the guys' decisions are their own concern, not theirs. So however you present your marriage status, some will like it, others won't and many won't care.

And she is an 18 year old honey too.  

Well, wrong thread, this was an SB's tag line.