I just try to fit them in when I would normally be out of the house on my own anyway, but maybe just leave the house an hour earlier, make up some excuse about meeting a work friend to get something to eat before work or something like that.
Does make it a bit of a headache booking indie girls though, what with their often limited schedules and the difficulty that can be had getting in contact with them. I'm getting better at that, but can be tricky. I just have to roll with things a bit. If it means I can't arrange or do a punt I'd like to do on one day, then I just wait and do it some other time when it will be less suspicious. Can be a bit of a frustration at times, but I guess it stops me punting more than I have budgeted for. So I just try to look at it like that, but is a bit frustrating, there is definitely a few WGs I would have seen by now if it wasn't for being in a relationship.