Hi J.,
Boy have I been in your shoes.....
You can't get it through his head so stop trying. You're divorced for a reason. If he won't do it on his own then it's never going to happen. Trust!!!
I suggest you get your girls off the couch and into an adult supervised activity like cheerleading, dance, league sports, music, volunteerism: something!! And for the summer months this is what I did...I gave my kids a deadline (June 5) in which they had to find a constructive activity that would last their entire break. They had to bring me three options. If they failed to do so I would find it for them which meant they could end up in a band or science camp. IT WORKED!!!
They each found an after school activity and a summer program that they enjoyed.
There is a plus side to all of this.....If they are involved in an activity it's much easier for them to SAY NO if they have somewhere to be when their friends try and influence them into doing something they know they shouldn't...AND it teaches them work ethic, life and work balance, responsibility and most importantly self worth. In addition, these extra-curriculars look good on their college aps!!!
When children are young parents put them into day care programs while they work. But when they become teenagers parents leave them to their own devices and that's when things happen. An idle mind is the devil's workshop so they need to stay busy when you can't be there.
My kids are now attending two of the most prestigious universities in the country and continue to volunteer in the communities they now live in.
As for their father....he has decided he wants to spend more time with them and guess what? School along with their volunteer commitments have priority. He's called me on several occasions, before they went off to college and when they come home for the summer, asking me to talk with them about calling and visiting him more; when they were home this summer neither of them called to let him know they were home. My response to him when he calls is "When I tried talking to you about the importance of the quality and quantity of time you spend with them you refused to hear me. Now, they are grown women with lives and minds of their own. While I can suggest they call and visit I can't make them. That ship has sailed and you missed it."
Good Luck!!!
Connie