PS
You can usually find some pretty cool cats at the Pharmacy Bar, further down 18th (walking distance from Capital Hemp/Starbucks). Very laid back place and probably your best bet... again if you're good at bullshitting with people.
PPS
You can also try to bro down with some of the college-age longboarders on 18th (again, Adam's Morgan). One or two work at Madam's Organ- just say you heard some skaters worked there or something. Just grit your teeth and go for it.