Some great tips here, I'll add a few.
Along with the burner phone a private hobby email account is a must. Log into the account using a private browser and don't let your phone (even the burner one), browser or anything remember the account and password. Go through the hassle of logging in every fucking time. Annoying but worth the effort. No one outside your own head shall ever know you have this email account.
Erase every text and email on the burner and hobby email after you've read it.
Golf is a great cover hobby because it takes hours, but any cover hobby needs to be one your SO hates. You don't want her to decide she'd like to come with you one day.
Prepaid credit cards can be a good back up in case the parking doesn't take cash and that kind of issue. Hide it well and if it's found you can say a buddy gave it to you to say thanks for something and you'd lost it. Thanks for finding it for me honey!!!
After a session with a hot girl it's easy to be in that afterglow of a good time and forget to do something, so have a checklist of tracks to cover in case the big head is still a little foggy. Erase the texts telling you how to get into the incall etc...
Tell no one. Not even your best buddies if they could one day say something in the wrong company after a few beers. The only safe place to talk about this hobby is anonymously here on TERB.
Have an ultimate back up, if all else fails, burn the tapes kind of strategy in case the worst happens and your cover story gets blown wide open. Personally I plan to have a shameful, crippling gambling addiction and a mental breakdown.
Good luck.